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Table 3 Predictors of the Optimal Uptake of IPTp-SP (≥ 3 doses) during pregnancy

From: Predictors for the uptake of optimal doses of sulfadoxine-pyrimethamine for intermittent preventive treatment of malaria during pregnancy in Tanzania: further analysis of the data of the 2015–2016 Tanzania demographic and health survey and malaria indicator survey

Variables N (weighted) Took 3 + doses aCOR (95% CI) p-value bAOR (95% CI) p-value
N (%)
Overall 4056 327 (8.1)     
Age (years)
 15–19 (ref) 531 35 (6.5) 1.0    
 20–24 1114 102 (9.1) 1.3 (0.91–2.26) 0.283   
 25–29 963 67 (6.9) 1.1 (0.65–1.74) 0.812   
 30–34 696 58 (8.3) 1.3 (0.77–2.17) 0.325   
 35–39 487 46 (9.5) 1.5 (0.88–2.55) 0.260   
 40–44 231 16 (7.2) 1.1 (0.55–2.20) 0.780   
 45–49 34 3 (10.5) 1.7 (0.52–5.35) 0.388   
Marital status
 Never in union (ref) 351 40 (11.4) 1.0    
 In union 3307 256 (7.7) 0.6 (0.53–1.17) 0.339   
 No longer in union 398 31 (7.7) 0.7 (0.37–1.21) 0.436   
Education level
 No formal (ref) 762 30 (3.9) 1.0   1.0  
 Primary 2,607 224 (8.6) 2.3 (1.42–3.70) 0.001 2.2 (1.26–3.67) 0.005
 Secondary +  687 73 (10.7) 2.9 (1.71–5.00)  < 0.001 2.1 (1.08–4.22) 0.029
Residence
 Rural (Ref) 1128 131 (11.6) 1.0   1.0  
 Urban 2928 196 (6.7) 1.8 (1.33–2.53)  < 0.001 1.1 (0.66–1.90) 0.677
Occupation
 Unemployed (ref) 774 63 (8.1) 1.0    
 Self-employed 2160 150 (7.0) 0.8 (0.58–1.23) 0.383   
 Employed 1122 114 (10.1) 1.3 (0.88–1.84) 0.197   
Wealth index
 Poorest (ref) 966 58 (6.0) 1.0   1.0  
 Poorer 857 66 (7.7) 1.3 (0.84–2.05) 0.227 1.2 (0.78–1.94) 0.364
 Middle 771 48 (6.2) 1.0 (0.69–1.58) 0.851 0.8 (0.54–1.25) 0.352
 Richer 779 66 (8.4) 1.4 (0.92–2.27) 0.110 1.0 (0.62–1.75) 0.886
 Richest 683 89 (13.1) 2.4 (1.52–3.66)  < 0.001 1.3 (0.63–2.52) 0.518
Parity
 1 1110 103 (9.3) 1.4 (1.00–1.96) 0.051 1.2 (0.80–1.71) 0.412
 2 782 77 (9.8) 1.5(1.08–2.09) 0.017 1.3 (0.92–1.82) 0.143
 3 + (ref) 2164 147 (6.8) 1.0   1.0  
Timing of 1st ANC visit
 1st trimester 928 116 (12.6) 4.7 (2.55–8.81)  < 0.001 2.4 (1.20–4.96) 0.014
 2nd trimester 2691 198 (7.3) 2.6 (1.41–4.85) 0.002 1.8 (0.93–3.47) 0.080
 3rd trimester (ref) 434 13 (2.9) 1.0   1.0  
Number of ANC visits
 1–3 (ref) 2054 91 (4.4) 1.0   1.0  
 4 +  1994 233 (11.7) 2.9 (2.12–3.86)  < 0.001 1.9 (1.34–2.83)  < 0.001
Health facility for ANC
 Non-government (ref) 3199 238 (7.4) 1.0   1.0  
 Government 857 89 (10.4) 1.5 (1.09–1.94) 0.012 1.5 (1.07–1.97) 0.017
Geographic zone
 Western (ref) 525 11 (2.1) 1.0   1.0  
 Northern 384 12 (3.0) 1.5 (0.53–4.19) 0.443 0.9 (0.32–2.79) 0.911
 Central 477 51 (10.8) 5.7 (2.40–13.7)  < 0.001 5.0 (2.08–11.9)  < 0.001
 Southern highlands 215 17 (8.1) 4.2 (1.76–10.2) 0.001 2.8 (1.15–7.02) 0.023
 Southern 148 16 (10.6) 5.7 (2.19–14.7)  < 0.001 3.8 (1.41–10.1) 0.008
 South west highlands 400 27 (6.7) 3.4 (1.30–8.87) 0.013 2.7 (1.03–7.29) 0.043
 Lake 1237 101 (8.2) 4.2 (1.84–9.73) 0.001 3.5 (1.51–8.14) 0.004
 Eastern 566 86 (15.3) 8.6 (3.73–19.7)  < 0.001 4.6 (1.88–11.1) 0.001
 Zanzibar 104 6 (5.7) 2.9 (1.25–6.71) 0.014 2.1 (0.80–5.36) 0.133
  1. aCOR Stands for Crude Odds Ratios, bAOR Stands for Adjusted Odds Ratios
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