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Determinants of late antenatal care presentation in rural and peri-urban communities in South Africa: A cross-sectional study

  • Joy Ebonwu,

    Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing

    Affiliation Research Unit, Foundation for Professional Development, Pretoria, South Africa

  • Alexandra Mumbauer,

    Roles Data curation, Formal analysis, Writing – original draft, Writing – review & editing

    Affiliation Research Unit, Foundation for Professional Development, Pretoria, South Africa

  • Margot Uys,

    Roles Conceptualization, Writing – original draft, Writing – review & editing

    Affiliation Integrated Health Systems Strengthening Department, Foundation for Professional Development, Pretoria, South Africa

  • Milton L. Wainberg,

    Roles Data curation, Formal analysis, Writing – original draft, Writing – review & editing

    Affiliation New York State Psychiatric Institute, Columbia University, New York, United States of America

  • Andrew Medina-Marino

    Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing

    andrewmedinamarino@gmail.com

    Affiliation Research Unit, Foundation for Professional Development, Pretoria, South Africa

Abstract

Objective

To investigate and compare determinates for delayed first presentation to antenatal care (ANC) services.

Methods

A cross-sectional study was conducted amongst pregnant women attending their first ANC visit in rural Capricorn District and peri-urban Tlokwe sub-district communities in South Africa. Data collection included questionnaires and medical record abstraction. Bivariate and multivariate analyses assessed factors associated with late ANC presentation.

Results

We recruited 807 pregnant women. Of these, 51% of rural women and 28% of peri-urban women presented late for first ANC. Rural women were more likely to present late for first ANC (AOR = 2.65; 95% CI 1.98–3.55) and report barriers to accessing ANC services (P<0.0001). Late ANC presentation in rural communities was associated with being married (AOR = 2.36; 95% CI 1.33–4.19), employed (AOR = 1.90; 95% CI 1.03–3.50), <20 years of age (AOR = 2.19; 95% CI 1.10–4.37), and reporting an unplanned pregnancy (AOR = 2.21; 95% CI 1.40–3.50). Late presentation in peri-urban communities was associated with unplanned pregnancy (AOR = 1.67; 95% CI 1.01–2.74), being told to come back later to initiate ANC after presenting early (AOR 0.51; 95% CI 0.30–0.89) and being pregnant for the first time (AOR = 0.56; 95% CI 0.34–0.94)

Conclusion

Both rural and peri-urban women had high rates of late presentation for first ANC. However, women in the rural communities were more likely to present late. Unplanned pregnancy was an independent risk factor in both rural and peri-urban communities. Interventions around family planning, especially for adolescent girls and young women, are needed to improve early presentation for ANC.

Introduction

Antenatal care (ANC) includes preventive and curative care services delivered during pregnancy. During ANC, health providers monitor for and identify risk factors relating to poor maternal and birth outcomes. Once identified, providers can initiate appropriate medical and educational interventions to reduce risks for maternal-neonatal morbidity and mortality. ANC services, especially at first visit, includes essential screening for health conditions such as human immunodeficiency virus (HIV) and Syphilis; for HIV-infected pregnant women, the maximum benefit of antiretroviral therapy (ART) to prevent mother-to-child transmission (PMTCT) of HIV requires early presentation to the health system [1]. Furthermore, immunizations, such as Tetanus toxoid, given during pregnancy can be life-saving for both mother and infant.

Though the World Health Organization (WHO) recommends initiation of ANC during the first trimester, late first ANC presentation remains widespread in sub-Saharan Africa, with geographical differences in the timing of ANC presentation between urban and rural settings identified within countries [2,3]. Documented risk factors for late first ANC presentation include lack of education, attitudes and knowledge regarding pregnancy, being unmarried, history of obstetric complications, and cultural beliefs. Availability, affordability and accessibility of health care services have also been identified as risk factors for late ANC presentation [49]. Booking delays, where women present early to the clinics but are given appointment to initiate ANC at a later date, have been reported in South Africa [10]. The ideal, however, is for ANC to be initiated when women first present to the clinic, with no formal appointments. Some women may not know the importance of attending ANC early, or may not know how far along in their pregnancy they should be before attending their first ANC appointment [5,9]. However, even with adequate knowledge, socio-cultural determinants of health-seeking behaviors may negatively impact utilization of ANC services [7].

In South Africa, all government health care facilities offer free basic antenatal care (BANC) services. While most women cannot afford the full cost of ANC and delivery in the private sector, some still seek initial ANC services in the private sector. When referred from the private to public sector care, these women are expected to carry letters or cards that summarise all relevant ANC up to that point. The government recommends that pregnant women attend their first ANC visit before 20 weeks gestation [11]; the rate of presentation for first ANC before 20 weeks is a core national indicator used to assess the performance of the national PMTCT programme. In 2015/16, 61.2% of pregnant women in South Africa attended their first ANC before 20 weeks gestation [12], and 94% attended at least one ANC visit to public sector healthcare facilities for that pregnancy [13]. However, 39 (75%) of South Africa’s 52 health districts achieved the 60% national target of initiating ANC before 20 weeks of pregnancy [12]. Critical to this context is the high prevalence of HIV in pregnant women, recently estimated at 29.5% [14]. Specifically, late presentation for ANC delays HIV diagnosis and ART initiation. Ultimately, delayed ART initiation decreases the length of time available for optimal viral load suppression prior to delivery, thus increasing the risk of mother-to-child transmission (MTCT) of HIV [15,16].

Despite the importance of presenting early for ANC services, few studies have been conducted in South Africa to determine risk factors for late first ANC presentation. As South Africa shifts its focus from prevention to elimination of MTCT of HIV, determining population-specific risk factors for late ANC presentation is crucial. Based on expressed concerns from two local health departments about their ANC attendance indicators, we sought to investigate risk factors for late presentation for first ANC visits in rural and peri-urban settings.

Materials and methods

A cross-sectional study was conducted amongst pregnant women attending primary healthcare (PHC) clinics in rural Capricorn District, Limpopo Province and peri-urban Tlokwe sub-district, Dr Kenneth Kaunda District, North West Province (Fig 1) for their first ANC visit of that pregnancy. The PHC is the foundational health facility in South Africa that “provides an integrated package of essential primary health care services available to the entire population”. It was implemented to promote equity and access to health care [17].

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Fig 1. National map of South Africa with highlighted study locations.

https://doi.org/10.1371/journal.pone.0191903.g001

Both Capricorn and Tlokwe fell below the national target for first ANC visit before 20 weeks for 2013/14. The Foundation for Professional Development (FPD) was the PEPFAR District Support partner for Health Systems Strengthening activities in Capricorn District and Tlokwe sub-district. Health officials from both municipalities expressed concern about their rates of first ANC attendance before 20 weeks. As such, both locations were selected based on the districts seeking support to investigate these issues.

Capricorn is one of six districts in Limpopo Province, and has an estimated 2016 population of 1,330,463. Capricorn has 99 primary health clinics (PHCs) across five sub-districts. In 2013, an estimated 26,061 women in the district attended first ANC services across the clinics.

Tlokwe is a peri-urban sub-district in Dr Kenneth Kaunda District, North West Province, and has an estimated 2016 population of 179,604. The study was conducted in all eight primary healthcare clinics (PHCs) in Tlokwe sub-district. On average, the clinics in the sub-district attend to about 2,400 pregnant mothers coming for first antenatal visit per annum.

Study participants were recruited from 20 randomly selected PHCs in Capricorn and all eight PHCs in Tlokwe. Participant enrolment occurred from January 26th through August 26th 2015.

Sample sizes for each study location was determined using the South African District Health Information System’s average rate of first ANC presentation after 20 weeks (Capricorn = 43%; Tlokwe = 34%), with a 5% level of significance and 5% margin of error. The calculated sample size for Capricorn District was 377, adjusted by adding 5% non-response rate (n = 397) and then rounded off to 400. The sampling frame consisted of the 99 PHCs in Capricorn, stratified by sub-district. Clinic selection was based on probability proportional to the annual headcount of women presenting for first ANC at each sub-district. The calculated sample size for Tlokwe sub-district was 345, adjusted by adding 10% non-response rate, and rounded off to 397. This sample was proportionally allocated to Tlokwe’s eight PHCs based on their three-month average headcount of women presenting for first ANC. Consecutive consenting pregnant women were recruited in each clinic until the required sample size for that clinic was met. For Capricorn and Tlokwe, recruitment occurred over a variety of days and times each week. Some facilities offered ANC services every day while others only offered ANC on designated days of the week.

Trained study personnel conducted face-to-face interviews using a pre-piloted, structured questionnaire. Data was collected on socio-demographics, obstetric characteristics, and the knowledge, attitude and practice of the women with regards to ANC. Per South African national guidelines for ANC services, gestational age was measured using the date of last menstrual period of the mother and/or symphysis-fundal height; gestational ages were abstracted from maternity case records [18]. For the two areas, sampling occurred over a variety of days of the week and times. Some facilities offered ANC services every day while others offered it at a designated day of the week.

The South African National Department of Health defines late first ANC presentation as those women presenting to a government health clinic at or after 20 weeks gestation. As such, our outcome variable defines early and late presentation for first ANC as <20 weeks gestation vs. ≥20 weeks gestation, respectively. For the purpose of this study, we defined a ‘partner’ as the sexual partner for current pregnancy (i.e. the father of the baby).

Data were entered into a web-based data entry system and stored on an in-house server. Categorical data were summarized as proportions. Median, range and inter-quartile range (IQR) were used to describe numeric data. Pearson's chi-squared test or Fisher's exact test was used for comparison of categorical variables. Analysis was done, in the adolescent sub-population, to determine their effective use of family planning services. Logistic regression with fixed effect for Capricorn and Tlokwe (which would help establish if factors associated with ANC are different between areas more objectively) was used for both bivariate and multivariate analyses to assess factors associated with late presentation for first ANC. Variables with P<0.2 in bivariate analysis were entered into the multivariate model. A P<0.05 in the multivariate analysis was regarded as statistically significant and 95% confidence intervals (CI) were used to estimate precision. Goodness-of-fit test was used to compare observed values to what the model predicted. Data analysis was performed using STATA 13 (StataCorp LP, College Station, TX, USA).

Ethics approval was obtained from The Foundation for Professional Development Research Ethics Committee (REC-03711-033-RA). Study approvals were obtained from Capricorn District and Limpopo Provincial health departments, and the Tlokwe sub-district and North West Provincial health departments. Written informed consent was obtained from all participants prior to data collection.

Results

A total of 810 pregnant women attending their first ANC visit for that pregnancy were recruited from Capricorn District (n = 410) and Tlokwe sub-district (n = 400; Table 1); three women recruited from Tlokwe were excluded from all analysis due to missing information on gestational age. The age of the study participants ranged from 14 to 44 years, with most (58%) within the 20–29 years.

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Table 1. Socio-demographic, obstetric and health seeking characteristics of study participants.

https://doi.org/10.1371/journal.pone.0191903.t001

Though no significant differences in obstetric characteristics was detected between the study populations from Capricorn and Tlokwe, the two differed significantly in certain socio-demographic characteristics and attitudes towards ANC. Specifically, a higher proportion of participants in Capricorn reported they were married (19% vs. 13%; p 0.036); unemployed (81% vs. 65%; p <0.001); have partners that are unemployed (38% vs. 20%; p <0.001); have higher levels of education (58% vs. 45%; p <0.001) and have no monthly income (10.4% vs. 2%; p <0.0001). Conversely, a higher proportion of participants in Tlokwe reported using tobacco products (12% vs. 4%; p <0.001).

Of the 807 study participants, 319 (40%) presented late (≥ 20 weeks) for their first ANC, with about 11% within the third trimester. Participants in Capricorn were more likely to present late than those in Tlokwe (51% vs. 28%; p <0.001) and also within the third trimester (15.4% vs. 7.3%; p <0.001). Of note, early ANC is considered by WHO to be up to 12 weeks gestation [19]. By WHO standards, 72% (585/807) of women in our study presented late for their first ANC visit (Capricorn: 83% (339/410); Tlokwe: 62% (246/397). Gravidity, parity, and number of previous pregnancies did not vary between Capricorn and Tlokwe (Table 1). More than half of all participants reported that their pregnancy was unplanned (Table 1), with more adolescents (<20 years) in both settings reporting an unplanned pregnancy compared to women 20 years or more (82% vs. 57%; p <0.001). First ANC delays due to clinic bookings, where women present early to the clinics but are given an appointment to initiate ANC at a later date, was reported more by participants from Tlokwe (41% vs. 8%; p <0.001).

Once pregnancy was confirmed, 22% of participants in Capricorn and 13% in Tlokwe reported seeking care from non-public sector health care providers (e.g., general practitioners, consultant gynecologists or traditional healers; P = 0.001; Table 1). Reasons for seeking care outside of the public health system varied significantly by study setting (Table 1; P<0.001). In both Tlokwe and Capricorn, no participant could recall receiving the full package of ANC services from non-public sector health care providers; fewer than 25% of participant receiving an HIV test in the non-public health sector (Table 1). Furthermore, 38% (44/115) of those that first sought care outside the public sector presented late for first ANC at public sector clinics.

Participants in Capricorn were significantly more likely to report a barrier to accessing ANC services than those in Tlokwe (43% vs. 13%; p <0.001). Of those reporting barriers to accessing ANC services (n = 227; Fig 2) the top five reported barriers were 1) being too busy (n = 60), 2) long waiting time (n = 50), 3) distance to the clinic (n = 40), 4) infrequent transport (n = 18) and 5) cultural secrecy (n = 17). Of the 30 women who reported being too busy and presented late for their first ANC, 17 (57%) were unemployed. After adjusting for study location, there was no significant association found between reporting any barrier to accessing care and presenting late for first ANC services.

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Fig 2. Difficulties with coming to the clinic for ANC and first ANC entry time (n = 227).

https://doi.org/10.1371/journal.pone.0191903.g002

An assessment of participant’s knowledge, perceptions and practices relating to ANC (Table 2) revealed that of the 546 (68%) study participants who indicated knowing the right gestational age at which a pregnant woman should attend their first ANC visit, 506 (93%) correctly reported start time of before 20 weeks’ gestation (Table 2). Of those that correctly reported the recommended ANC starting time, 38% (194/506) presented late for their first ANC visit. Nearly half of all participants reported receiving information or advice of when to start ANC, with the majority receiving information from health workers (Table 2). Very few women were accompanied to the clinic by their partner (7%), and ~30% of women expressed a negative emotion (e.g. sad or scared) upon confirmation of their pregnancy.

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Table 2. ANC knowledge, attitudes and practices of study participants.

https://doi.org/10.1371/journal.pone.0191903.t002

The goodness-of-fit test shows our model fits adequately well with the observed outcome in the data (observations 807; prob>chi2 0.4941). The rural women were more likely to present late for first ANC (AOR = 2.65; 95% CI 1.98–3.55; p = <0.001). Factors associated with late first ANC presentation (Table 3) in Capricorn are 1) 20–29 years of age (AOR = 0.42; 95% CI 0.21–0.84), 2) married (AOR = 1.97; 95% CI 1.12–3.48), and 3) reported an unplanned pregnancy (AOR = 2.10; 95% CI 1.35–3.27). Alternately, in Tlokwe, significant associations exist between late presentation for first ANC and women who reported an unplanned pregnancy (AOR = 1.80; 95% CI 1.09–2.96). Those who were pregnant for the first time (AOR = 0.55; 95% CI 0.33–0.91), told to come back later for ANC initiation even after presenting early to the clinic (AOR 0.61; 95% CI 0.37–0.98) and those who received information or advice on when to start ANC (AOR 0.61; 95% CI 0.38–0.98) were less likely to initiate ANC late (Table 3). The results of the pooled multivariate analysis showed that older age group has lower odds of initiating ANC late compared to those below 20 years (adolescents), as well as those who received information or advice on when to start ANC (AOR 0.70; 95% CI 0.52–0.96). The women who reported unplanned pregnancy (AOR 1.97; 95% CI 1.43–2.72) were more likely to initiate ANC late (Table 4).

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Table 3. Logistic regression analysis (with fixed effects) of determinants of late presentation in rural Capricorn District and peri-urban Tlokwe sub-district.

https://doi.org/10.1371/journal.pone.0191903.t003

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Table 4. Pooled logistic regression analysis (with fixed effects) of determinants of late presentation.

https://doi.org/10.1371/journal.pone.0191903.t004

Discussion

Though South Africa considers women presenting for their first ANC visit before 20 weeks gestation as presenting early for ANC, a large proportion (72%) of our study population presented for their first ANC beyond the WHO recommendation for initiating antenatal care within the first trimester. The implication of presenting late for ANC is the delayed opportunity to prevent adverse pregnancy outcomes, for both mother and child. We found that pregnant women living in the rural communities were more likely to present late for their first ANC visit than those living in the peri-urban communities This finding is consistent with previous studies in Ethiopia [5,20]. Furthermore, being married or <20 years of age were risk factors unique to our rural community, while booking delays, being pregnant for the first time and receiving information or advice on when to start ANC were unique risk factors to our peri-urban community. Having an unplanned pregnancy was a common risk factor to both communities. Our finding that rural women were more likely to present late for their first ANC compared to peri-urban women may be attributable to differences in certain socio-demographic characteristics and attitudes towards ANC between the rural and peri-urban population in our study.

In our study, unplanned pregnancy was an independent risk factor for late ANC presentation in both study communities. Those with an unplanned pregnancy may be missing familial or partner support that engenders good healthcare seeking behavior [21]. Furthermore, women with unplanned pregnancies may contemplate pregnancy termination [22] or may be in denial of the pregnancy [23] both of which may delay presentation for ANC services. Unplanned pregnancies are also related to social-cultural determinants of health-seeking behaviours, sexual violence and barriers to access; some of these may be associated with late ANC. For instance, barriers to access family planning may be similar to those to access ANC. Effective use of family planning services should be further promoted to reduce events of unintended pregnancies and late ANC presentations [22]. Increased effort should also be made to improve women’s behaviour towards ANC use, especially those with unplanned pregnancies.

Adolescent girls (15–19 years) account for more than 10% of births world-wide and are more likely than older mothers to die in child birth [24]. Our findings that adolescent girls were more likely to present late for their first ANC visit and have unplanned pregnancies are consistent with previous findings [24,25]. Given the social consequences of pregnancy during adolescence, factors that influence ANC attendance among adolescents in these settings require further studies.

Knowledge about the timing of first ANC was associated with presentation for ANC in the combined data. The pregnant women who received information or advice on when to start ANC were less likely to start ANC late. This is consistent with findings from two Ethiopian studies [26,27] but differed from a Tanzanian study that found no association between knowledge about correct ANC timing and early ANC presentation [28]. Our study also observed a tendency for late ANC initiation among women who had been pregnant more than once. This is in line with our finding that previous pregnancies did not offer protection against late ANC entry. This could mean the women were not adequately educated through ANC about the importance of presenting on time for the next pregnancy or they feel starting early is not necessary if there were no complications with the previous pregnancy. Some women may feel more confident after previous birth experiences and delay ANC initiation [3] and difficulty in finding someone to look after their children may also explain the same finding in other settings. In our study, 48% of study participants indicated they received information on when to start ANC mainly from healthcare workers. Considering the substantial number of primigravida women (34%) in our study, community-based sources of information on when to start ANC are needed to encourage early presentation.

The marital status of the rural women was found to be significantly associated with late ANC presentation. Specifically, married women were more likely to initiate ANC late than unmarried women. This finding is contrary to observations in Rwanda, where being married was protective against late ANC entry [6], and Tanzania, where no significant association was identified [28]. We also observed that being accompanied to the clinic for ANC by their partners did not seem to be the usual practice as only 7% (53/807) of the pregnant women were accompanied to the clinic by their partners.

South African guidelines on maternity care require ANC services be provided during first contact with a pregnant woman, and without formal appointments. Interestingly, we found that booking delays (i.e., being told to return at a later date to initiate first ANC visit services) in Tlokwe sub-district were associated with early first ANC presentation. It is not clear why this is the case, as booking delays have previously been reported as a barrier to early ANC presentation [10].

We did not consider presentation for first ANC before 20 weeks to a non-public sector health provider as an early visit because participants did not have any documentation on their visit, nor did any report receiving the comprehensive set of ANC services. Our findings of women presenting early (i.e., before 20 weeks gestation) to non-public sector providers, but then presenting late to public sector clinics is consistent with findings by Sibeko and Moodley in Durban, South Africa [2]. It would appear that pregnant women confirm their pregnancies by visiting general practitioners, and then present for ANC services in the public sector. According to the guidelines for maternal care in South Africa, complete assessment of gestational age and risk factors ought to be made at the first antenatal visit. Although the capacity to provide comprehensive ANC services in the non-public sector is available in South Africa, most women cannot afford the same set of comprehensive services that the public sector provides in the private sector. It is tempting to suggest that South Africa’s programmatic definition may result in an overestimation of the rate of late first ANC presentation. However, the incomplete package of basic antenatal care services provided by non-public sector health care providers, especially the low rates of HIV testing, suggests that caution should be taken in interpreting these results, especially in the context of risk reduction services for prevention of mother-to-child transmission of HIV.

The tendency of the employed women in our rural community to present late for their first ANC visit is in agreement with a—recent study in Johannesburg [10]. However, we observed that 17 of 30 57%) women in our total population who presented late because of their busy schedule were unemployed. This suggests that in these communities, employment is not the only measure or explanation for a busy schedule. Thus, understanding the daily lives of women in these communities is needed to better inform interventions to assure early presentation for ANC services.

Study participants from Capricorn were more educated but less likely to be employed or have monthly income. This should not logically be the case. It is possible the women reported being unemployed to avoid any hospital charges at the time of delivery. Although ANC services are offered free at all levels of care in South Africa, not all of them have obstetric units. Delivery is mainly done in community health centres and hospitals. The patients are expected to pay a minimal service fee, the amount depending on annual income to ensure those who can pay do so.

Our study had some limitations. The study only included women attending ANC at public health clinics. As a cross-sectional study, the associations observed may not be causal enough. Specifically, the list of risk factors we measured was likely not comprehensive, and factors relating to the health care systems or the attitude of healthcare workers were excluded. Including qualitative in-depth interviews may have enhanced our understanding of the reasons for women presenting late for their first ANC visit. Our data is not representative of all women, but only those who sought antenatal care at public facilities. Participants not being randomly selected is also a weakness of the study. There was a sampling frame for selecting the clinics per sub-district but not for individuals within the clinics. Quality of care differences between the public and the non-public sectors was not assessed in the study. The participants were interviewed before they received their basic ANC screenings in the public health facilities and not again after.

The observed late ANC attendance in our participants indicates that the importance of early ANC is not yet generally understood by pregnant women despite high ANC coverage in South Africa. As such, we recommend conducting research to identify optimal messaging and modes of communication to improve early presentation and increase demand generation for ANC. From a public health perspective, ANC received from a skilled provider is desirable, irrespective of the type of provider. It should be emphasized that the concerns surrounding seeking ANC services outside the government health systems is not one of a women’s behaviour or understanding of the need for ANC, but that of the quality of services in the private sector. However, complete package of ANC services at the public health facilities is not always guaranteed, as some services, like HIV testing, may not be available at a woman’s first ANC visit, even when it is required. Given the high prevalence of HIV in pregnant women in South Africa, we generally recommend all health providers provide the full BANC, especially general practitioners who can facilitate early referral to public ANC clinics when full BANC cannot be provided. Although South Africa is currently implementing a community health worker (CHW) program aimed at decentralizing primary health services to the community level, we have no data to suggest that CHW activities in these two districts may have differential impact on timing of first ANC attendance; this area requires future study.

The prevalence of late ANC presentation was significantly higher in the rural compared to the peri-urban study area. The predictors of presenting late for first ANC varied between rural and peri-urban study populations. Our findings highlight the need for community-based health education on the importance of early ANC initiation to empower women with this information before they get pregnant. Interventions to reduce prevalence of late ANC presentation should also address unplanned pregnancy through family planning education, barriers to access of healthcare services and social determinants of health-seeking behaviour. Since pregnant women are more likely to visit private GPs to confirm their pregnancies, the capacity of GPs to provide appropriate ANC services should be strengthened.

Supporting information

S1 File. Combined dataset for NW_LP ANC study.

https://doi.org/10.1371/journal.pone.0191903.s001

(DTA)

Acknowledgments

The authors wish to acknowledge Ms. Katie Pollack for support during the development of the study protocol and Professor Anne Paxton, Mailman School of Public Health, Columbia University, for her critical review and feedback on this manuscript.

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