Table 1 Study population characteristics across LLIN groups stratified by pre- and post-campaign periods. Summary statistics are presented as monthly averages/proportions across health facilities
|  | Conventional LLINs | PBO LLINs | Conventional + PBO LLINs | |||
|---|---|---|---|---|---|---|
Pre-period | Post-period | Pre-period | Post-period | Pre-period | Post-period | |
Total number of observations | 9129 | 4027 | 13,880 | 4473 | 5754 | 1822 |
Maternal age in years at delivery, mean (SD) | 24.5 (1.2) | 24.3 (1.0) | 24.5 (1.0) | 24.4 (1.9) | 23.6 (0.9) | 23.6 (0.6) |
% Primigravidae, mean (SD) | 22.4 (10.5) | 25.8 (10.8) | 19.4 (10.5) | 23.6 (9.4) | 29.9 (8.1) | 32.1 (4.6) |
% HIV prevalence, mean (SD) | 3.2 (2.9) | 3.2 (3.4) | 3.3 (2.9) | 3.5 (2.5) | 3.5 (2.9) | 3.8 (2.5) |
Birth outcomes | ||||||
 Number of deliveries, mean (SD) | 44.8 (19.7) | 49.7 (25.1) | 62.0 (42.6) | 66.8 (48.0) | 71.0 (36.3) | 86.8 (41.3) |
 LBW infants per 100 births, mean (SD) | 4.5 (4.7) | 3.9 (4.1) | 4.0 (4.2) | 4.3 (3.8) | 5.3 (4.2) | 4.3 (2.6) |
 Stillbirths per 100 deliveries, mean (SD) | 1.7 (7.2) | 1.1 (2.2) | 3.9 (5.2) | 3.3 (4.3) | 4.0 (2.3) | 5.2 (4.0) |