Table 1 Demographics and pregnancy characteristics by anemia level
|  | None (N = 1304) | Mild (N = 3690) | Moderate (N = 6023) | Severe (N = 68) |
|---|---|---|---|---|
Maternal age | 22.00 [20.00, 24.00] | 22.00 [20.00, 25.00] | 23.00 [20.00, 25.00] | 23.00 [21.00, 26.00] |
Parous | 710 (54.5) | 2306 (62.5) | 3983 (66.1) | 48 (70.6) |
Maternal basic education | 868 (66.6) | 2197 (59.5) | 3117 (51.8) | 31 (45.6) |
Husband basic education | 884 (67.8) | 2299 (62.3) | 3362 (55.8) | 37 (54.4) |
Multiple pregnancy | 12 (0.9) | 35 (0.9) | 49 (0.8) | 1 (1.5) |
Body-mass-index | 19.95 [18.08, 22.20] | 19.57 [17.80, 21.58] | 19.11 [17.54, 21.00] | 18.73 [17.34, 20.39] |
Iron supplementation a | 1290 (98.9) | 3662 (99.2) | 5969 (99.1) | 68 (100.0) |
Religion | ||||
 Hindu | 1188 (91.1) | 3335 (90.4) | 5569 (92.5) | 63 (92.6) |
 Muslim | 109 (8.4) | 336 (9.1) | 423 (7.0) | 5 (7.4) |
 Other | 7 (0.5) | 19 (0.5) | 31 (0.5) | 0 (0.0) |
Gestational age at enrolment | 11.14 [8.00, 15.86] | 11.43 [8.43, 15.57] | 11.57 [8.71, 16.00] | 13.57 [9.57, 18.57] |
Gestational age at delivery | 39.00 [38.00, 40.00] | 39.00 [38.00, 40.00] | 39.00 [38.00, 40.00] | 39.00 [36.75, 40.00] |
Mode of delivery | ||||
 Vaginal | 933 (71.5) | 2760 (74.8) | 4748 (78.8) | 56 (82.4) |
 Vaginal (assisted) | 12 (0.9) | 40 (1.1) | 51 (0.8) | 1 (1.5) |
 Caesarian section | 359 (27.5) | 890 (24.1) | 1224 (20.3) | 11 (16.2) |
Trial arm | ||||
 Intervention | 705 (54.1) | 2247 (60.1) | 2814 (46.7) | 32 (47.1) |
 Control | 599 (45.9) | 1443 (39.1) | 3209 (53.3) | 36 (52.9) |
Blood pressure measurement from POM | 644 (49.4) | 2032 (55.1) | 2592 (43.0) | 27 (39.7) |