Table 1. Characteristics of postpartum and non-pregnant control women.
| Postpartum (N = 201) | Controls (N = 201) | p value | |
|---|---|---|---|
| At enrolment | |||
| Age (years) | 27.5 (22–32), [18–45.5] | 28.0 (23–35), [18–50] | 0.40 |
| Gravidity | |||
| Nulligravid | 0 (0) | 38 (18.9) | <0.001 |
| 1–2 | 78 (38.8) | 75 (37.3) | — |
| 3+ | 123 (61.2) | 88 (43.8) | — |
| Past behavioura | |||
| Use of bednets | 194 (93.0) | 187 (96.5) | 0.12 |
| Slept outside | 57 (28.4) | 42 (20.9) | 0.08 |
| Worked outside | 121 (60.2) | 145 (72.1) | 0.01 |
| During follow-up | |||
| Sera samples | 4 (4–4) [1–5] | 4 (3–4) [1–5] | 0.07 |
| Days between first and last sera sample | 70 (70–77) [0–81] | 70 (63–77) [0–84] | 0.20 |
| P. falciparum | |||
| Any infection | 22 (10.8) | 32 (15.8) | 0.14 |
| Number of infections | 1 (1–2) [1–3] | 1 (1–1.5) [1, 2] | 0.53 |
| P. vivax | |||
| Any infection | 67 (33.0) | 50 (24.8) | 0.06 |
| Number of infections | 1 (1–2) [1–3] | 1 (1–2) [1–4] | 0.48 |
| Any P. falciparum/P. vivax co-infection | 1 (0.5) | 4 (2.0) | 0.37 |
Data presented as median (inter-quartile range), [minimum-maximum] or n (%). Wilcoxon rank-sum tests were performed on continuous data; chi square tests or Fisher’s exact tests (where chi square test assumptions were not met) were performed on categorical data.
aBehaviour prior to enrolment was reported by questionnaire.