|  |  | Crude | Adjusteda | ||
---|---|---|---|---|---|---|
 | Quartile | Cases (%) | RR (95 % CI) | p-valueb | RR (95 % CI) | p-valueb |
Preterm birth (<37 wk) | ||||||
 Baseline | 1 | 29 (8.3) | 1 | 0.258 | 1 | 0.384 |
 | 2 | 34 (10.5) | 1.26 (0.79 to 2.02) |  | 1.31 (0.75 to 2.31) |  |
 | 3 | 35 (11.2) | 1.34 (0.84 to 2.14) |  | 1.22 (0.68 to 2.21) |  |
 | 4 | 30 (10.8) | 1.30 (0.80 to 2.12) |  | 1.29 (0.76 to 2.20) |  |
 28 wk | 1 | 20 (8.6) | 1 | 0.753 | 1 | 0.833 |
 | 2 | 18 (8.9) | 1.03 (0.56 to 1.90) |  | 0.92 (0.45 to 1.87) |  |
 | 3 | 15 (7.0) | 0.81 (0.43 to 1.54) |  | 0.50 (0.26 to 0.99) |  |
 | 4 | 24 (10.0) | 1.16 (0.66 to 2.05) |  | 1.00 (0.49 to 2.04) |  |
 36 wk | 1 | 2 (0.7) | 1 | 0.092 | -- | -- |
 | 2 | 9 (3.3) | 4.75 (1.03 to 21.77) |  |  |  |
 | 3 | 6 (2.7) | 3.90 (0.80 to 19.15) |  |  |  |
 | 4 | 8 (3.2) | 4.64 (0.99 to 21.65) |  |  |  |
Small for gestational age | ||||||
 Baseline | 1 | 77 (28.0) | 1 | 0.428 | 1 | 0.246 |
 | 2 | 81 (31.3) | 1.13 (0.87 to 1.47) |  | 1.08 (0.81 to 1.44) |  |
 | 3 | 83 (34.0) | 1.22 (0.94 to 1.58) |  | 1.17 (0.88 to 1.55) |  |
 | 4 | 68 (30.2) | 1.09 (0.82 to 1.43) |  | 1.14 (0.85 to 1.53) |  |
 28 wk | 1 | 53 (28.3) | 1 | 0.5332 | 1 | 0.258 |
 | 2 | 37 (24.0) | 0.85 (0.59 to 1.22) |  | 0.88 (0.59 to 1.32) |  |
 | 3 | 58 (31.0) | 1.09 (0.80 to 1.50) |  | 1.23 (0.88 to 1.71) |  |
 | 4 | 56 (29.3) | 1.04 (0.76 to 1.43) |  | 1.11 (0.79 to 1.56) |  |
 36 wk | 1 | 61 (24.4) | 1 | 0.028 | 1 | 0.121 |
 | 2 | 71 (31.4) | 1.29 (0.96 to 1.72) |  | 1.41 (1.01 to 1.98) |  |
 | 3 | 68 (35.4) | 1.45 (1.09 to 1.94) |  | 1.39 (0.97 to 1.97) |  |
 | 4 | 67 (32.8) | 1.34 (1.00 to 1.80) |  | 1.28 (0.90 to 1.81) |  |
Low birth weight (<2500Â g) | ||||||
 Baseline | 1 | 35 (11.4) | 1 | 0.111 | 1 | 0.170 |
 | 2 | 37 (12.6) | 1.10 (0.72 to 1.70) |  | 1.00 (0.64 to 1.55) |  |
 | 3 | 38 (13.8) | 1.21 (0.79 to 1.86) |  | 1.01 (0.63 to 1.61) |  |
 | 4 | 40 (15.9) | 1.39 (0.91 to 2.12) |  | 1.31 (0.85 to 2.02) |  |
 28 wk | 1 | 16 (7.7) | 1 | 0.002 | 1 | 0.001 |
 | 2 | 15 (8.2) | 1.05 (0.54 to 2.07) |  | 1.13 (0.55 to 2.55) |  |
 | 3 | 30 (14.6) | 1.88 (1.06 to 3.35) |  | 2.01 (1.08 to 3.74) |  |
 | 4 | 35 (16.2) | 2.10 (1.20 to 3.67) |  | 2.56 (1.31 to 5.00) |  |
 36 wk | 1 | 15 (5.5) | 1 | 0.003 | 1 | 0.027 |
 | 2 | 23 (9.1) | 1.66 (0.89 to 3.11) |  | 2.54 (1.15 to 5.59) |  |
 | 3 | 36 (16.7) | 3.03 (1.71 to 5.39) |  | 3.15 (1.46 to 6.78) |  |
 | 4 | 27 (11.7) | 2.13 (1.16 to 3.90) |  | 2.14 (1.01 to 4.56) |  |
Newborn stunting (HAZ < −2) | ||||||
 Baseline | 1 | 45 (15.3) | 1 | 0.099 | 1 | 0.072 |
 | 2 | 42 (15.0) | 0.98 (0.67 to 1.44) |  | 1.17 (0.80 to 1.72) |  |
 | 3 | 41 (15.3) | 1.00 (0.68 to 1.48) |  | 1.02 (0.68 to 1.52) |  |
 | 4 | 48 (21.3) | 1.39 (0.96 to 2.01) |  | 1.56 (1.08 to 2.25) |  |
 28 wk | 1 | 25 (12.1) | 1 | 0.095 | 1 | 0.309 |
 | 2 | 27 (15.1) | 1.25 (0.75 to 2.07) |  | 1.24 (0.73 to 2.10) |  |
 | 3 | 33 (16.8) | 1.39 (0.86 to 2.25) |  | 1.49 (0.89 to 2.51) |  |
 | 4 | 37 (17.9) | 1.47 (0.92 to 2.36) |  | 1.16 (0.72 to 1.87) |  |
 36 wk | 1 | 29 (10.9) | 1 | 0.195 | 1 | 0.281 |
 | 2 | 38 (15.2) | 1.38 (0.88 to 2.16) |  | 1.69 (1.03 to 2.77) |  |
 | 3 | 30 (14.6) | 1.34 (0.83 to 2.16) |  | 1.47 (0.86 to 2.53) |  |
 | 4 | 33 (15.2) | 1.39 (0.88 to 2.22) |  | 1.29 (0.74 to 2.23) |  |