Malaria in pregnancy is associated with substantial risk of maternal and fetal morbidity and mortality. The uptake of preventive antimalarials is low in malaria endemic countries, including Nigeria. Using a crosssectional study design, we assessed factors associated with uptake and adherence to intermittent preventive treatment for malaria in pregnancy (IPTp) among antenatal attendees in primary health centers in Kano, northern Nigeria (n5239). A total of 137 respondents (57.3%) reported receiving preventive antimalarials, but only 88 respondents (36.8%) [95% confidence interval (CI): 30.7-43.3%] reported ingesting pills in the clinic under supervision. Factors associated with adherence to IPTp after adjustment for potential confounding included: advanced maternal age [adjusted odds ratio (AOR) (95%CI)52.1 (1.3- 6.37)], higher educational attainment [AOR (95%CI)53.2 (1.32-6.72)], higher parity [AOR (95%CI)51.6 (1.07-3.94)], lower gestational age at booking [AOR (95% CI)51.72 (1.24-3.91)], and use of insecticidetreated nets [AOR (95%CI)52.03 (1.13-3.26)]. There is a need for strengthening health systems and addressing cultural factors that impede efforts at expanding coverage of malaria prevention strategies in Nigeria. © W. S. Maney & Son Ltd 2012.
The study was conducted in Kano Municipal local government area (LGA), one of the 44 LGAs of Kano State, Nigeria (estimated population: 365 525).20 Most of the women are fulltime homemakers, of Hausa–Fulani ethnicity. Malaria is endemic in this LGA with perennial transmission. The LGA is urban and is divided into 10 wards. There are 12 primary health care centers (PHCs) and four general hospitals. The PHCs are staffed by community health officers, community health extension workers, and a few nurses/midwives. Antenatal care services are conducted on Tuesdays and Thursdays in the PHCs. Other activities at PHCs include distribution of free ITNs supplied by the Federal Ministry of Health. Five frequency modulation (FM) radio stations (Freedom Radio, Rahama Radio, Cool FM, Radio Kano 2 FM, and Wazobia radio) serve residents of urban Kano and neighboring states. In addition, women in the study area are ardent listeners of foreign radio stations like the Hausa language service of the BBC, VOA, and Radio Deutsche Welle Hausa Service. These stations air health programs including those targeted at preventing malaria during pregnancy. Local, national, and global satellite television stations occasionally broadcast health programs that are viewed in the study area. Mobile telephone services are nearly universal, but access to internet services is very limited. The study population comprised all consenting pregnant women attending antenatal care at all the primary health centers rendering antenatal services in Kano Municipal LGA between June 2011 and July 2011. A cross-sectional descriptive design was used. We applied Fisher formula21 to compute the required sample size for the survey, using estimates of reported IPTp use among pregnant women in a previous study.22 In order to detect IPTp use with an error rate of 5% and 95% confidence interval (CI), the minimum sample size was inflated by 10% and rounded up to 250 to account for non-response. Respondents were selected using probability proportionate to size (of average annual attendance) from three randomly selected antenatal clinics from the six PHCs rendering antenatal services. In each sampled PHC, systematic sampling technique was used to recruit respondents. Using the estimate of the average clinic attendance, a sampling interval was determined for each PHC and applied accordingly, with balloting employed to determine the first enrollee. Information was collected using an interviewer-administered questionnaire adapted from a previous study.18 The questionnaire was structured with a combination of close and open-ended questions. Questions eliciting attitude and perceptions were on a five-point Likert scale or open ended. The questionnaire comprised questions on socio-demographic characteristics, obstetric history, and knowledge of malaria and IPTp, including attitudes to IPTp and antenatal clinic attendance. In the participating clinics, gestational age was routinely estimated by the last menstrual period and symphisio-fundal height measurement. Ultrasound scan was utilized for dating in cases of unsure date, first trimester cases, or when there was discrepancy between last menstrual period and symphisio-fundal height. Information on perception of attitude and activities of antenatal clinic staff toward IPTp was also assessed. The questionnaire was translated into Hausa language and administered by four trained female research assistants. Ethical approval for this study was obtained from the Aminu Kano Teaching Hospital Institutional Review Board. Data entry and analysis were performed using Statistical Package for Social Sciences (SPSS) version 16.0 (SPSS Inc., Chicago, IL, USA). Data were summarized using frequency tables, graphs, means, and standard deviations (SDs). Correct responses to knowledge questions were awarded one mark and wrong responses scored zero. The total scores were converted to percentages and graded as poor (0–39%), fair (40–69%), and good (70–100%). A woman was considered adherent if she swallowed the prescribed dose under the supervision of health workers at the clinic. To identify factors associated with adherence, bivariate analysis was employed using Chi-squared test or Chi-squared test for trend, as appropriate. Adjustment for confounding among factors was effected using logistic regression analysis. The crude odds ratio (OR) provides a measure of the strength of relationship between adherence to IPT (dependent variable) and each independent variable at the bivariate level. Adjusted odds ratios (AORs) were obtained by including variables found to be significantly associated with adherence at bivariate level en bloc in a logistic regression model. This was to determine the independent effects of various levels of these independent variables while controlling for the effect of the others. The corresponding 95% confidence intervals were also reported. All tests of significance were considered significant if P<0.05.
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