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Table 3 Risk factors of placental malaria infection

From: Coverage and effectiveness of intermittent preventive treatment in pregnancy with sulfadoxine–pyrimethamine (IPTp-SP) on adverse pregnancy outcomes in the Mount Cameroon area, South West Cameroon

VariableCategoryPM % (n)Unadjusted OR (95% CI)aAdjusted OR (95% CI)bp-value
SettingSemi rural (238)21.8 (52)1.56 (0.99–2.56)1.85 (1.12–3.04)0.016
Semi urban (227)15.0 (34)REFREF
Age group (years)c< 21 (90)27.8 (25)2.48 (1.37–4.51)NA 
21–25 (144)20.8 (30)1.70 (0.98–2.95)
> 25 (231)13.4 (31)REF
ParityPrimiparae (139)24.5 (34)2.09 (1.19–3.68)2.13 (1.19–3.81)0.011
Secundiparae (132)19.7 (26)1.59 (0.87–2.88)1.74 (0.94–3.23)0.078
Multiparae (194)13.4 (26)REFREF 
IPTp-SP Dosage frequency≥ 3 SP dose (20321.7 (44)1.66 (0.89–3.10)2.36 (1.41–4.87)0.021
2 SP dose (150)17.3 (26)1.26 (0.64–2.48)1.43 (0.70–2.90)0.324
≤ 1 dose (112)14.3 (16)REFREF 
Trimester of first ANCFirst (33)10.5 (9)0.22 (0.10–0.52)0.69 (0.25–1.80)0.448
Second (339)16.2 (55)0.60 (0.34–1.05)0.39 (0.20–0.74)0.004
Third (90)24.4 (22)REFREF 
ITN usageYes (315)19.0 (60)1.12 (0.68–1.87)1.02 (0.6–1.73)0.941
No (150)17.3 (17)REF  
  1. NA not applicable, IPTp-SP intermittent preventive treatment in pregnancy with sulfadoxine–pyrimethamine, ANC antenatal clinic, ITN insecticide-treated nets
  2. aValues calculated using confidence interval calculator
  3. bValues from multinominal regression analysis
  4. cAge variable not included in the final model due colinearaity with parity