Table 4 Factors associated with low birth weight. Salavan Province, Laos, 2014
From: Prevalence of malaria in pregnancy in southern Laos: a cross-sectional survey
Univariate analysisa | P value | Multivariate analysisa | P value | |
|---|---|---|---|---|
Crude IRR (95 % CI) | Adjusted IRR (95 % CI) | |||
Age (years) (20–24 = Ref) | 0.36 | |||
<20 | 1.54 (0.92–2.60) | |||
25–27 | 1.16 (0.65–2.06) | |||
≥28 | 1.01 (0.60–1.68) | |||
Primigravidity | 1.26 (0.85–1.87) | 0.25 | ||
Tobacco use | 2.50 (1.68–3.72) | <10−3 | 2.43 (1.64–3.60) | <0.001 |
Ethnicity Lao Theung (Ref = Lao Loum) | 1.57 (1.03–2.39) | 0.04 | ||
Place of living (Ref = Salavan) | 0.17 | |||
Vapi | 0.66 (0.31–1.44) | |||
Toumlane | 1.51 (0.93–2.44) | |||
Others | 0.74 (0.26–2.13) | |||
Went to the forest during the current pregnancy | 1.22 (0.83–1.82) | 0.30 | ||
No bed net use | 2.07 (1.27–3.36) | 0.003 | 1.56 (0.92–2.64) | 0.10 |
Number of ANC visits (≥4=Ref) | 0.01 | |||
1–3 | 1.41 (0.94–2.13) | |||
0 | 2.53 (1.34–4.77) | |||
Gestational hypertension | 1.26 (0.48–3.33) | 0.64 | ||
Moderate anaemia at delivery | 1.25 (0.84–1.87) | 0.28 | ||
Duration of pregnancy (weeks gestation) (37–38 = Ref) | <10−3 | <0.001 | ||
≥39 | 0.49 (0.25–0.99) | 0.49 (0.25–0.97) | ||
<37 | 3.47 (2.51–4.81) | 3.17 (2.19–4.57) | ||
Female | 1.15 (0.77–1.70) | 0.50 |