Table 2. Characteristics of responders’ ≥5 years of age according to gestational groups.
| Very Preterm | Moderate Preterm | Late Preterm | Full Term | |
|---|---|---|---|---|
| N = 509 | N = 466 | N = 1,155 | N = 1,462 | |
| Gestational age, weeks | 29.8* | 33.6* | 35.6* | 39.6* |
| (mean, 95%CI) | (29.6, 30.0) | (33.6, 33.7) | (35.6, 35.7) | (39.6, 39.7) |
| Birthweight, kg | 1.45* | 2.22* | 2.64* | 3.46* |
| (mean, 95%CI) | (1.40, 1.49) | (2.18, 2.26) | (2.61, 2.67) | (3.44, 3.49) |
| Male (%) | 301 (59.1%) | 260 (55.8%) | 627 (54.2%) | 775 (53%) |
| WIMD rank (median) Range: 1–1909 | 997* | 936* | 1,019* | 1,110* |
| Age, years | 7.1 | 7.1 | 7.3 | 7.2 |
| (mean, 95%CI) | (7.0, 7.3) | (7.0, 7.3) | (7.2, 7.4) | (7.1, 7.3) |
| Antenatal maternal smoking | 76/475 (16%) | 67/432 (15.5%) | 175/1,080 (16.2%) | 184/1,343 (13.7%) |
| Maternal age, years | 29.7 | 30.4 | 30.1 | 30.4 |
| (mean, 95%CI) | (29.2, 30.4) | (29.8, 31.0) | (29.7, 30.4) | (30.1, 30.7) |
| Mode of delivery (CS or not) | 269 (52.8%)* | 229 (49.1%)* | 439 (38%)* | 344 (23.5%)* |
| Missing data | 53 (10.4%) | 41 (8.8%) | 76 (6.6%) | 162 (11.1%) |
| IUGR | 77 (15.2%)* | 39 (8.4%)* | 116 (10.1%)* | 95 (6.5%)* |
*Significant difference (p<0.001) between groups.