TABLE 1.
Population Characteristics of the Birth Cohort
| SARI-WI (N = 555) |
Nonhospitalized (N = 41,514) |
Total (N = 42,069) |
|
|---|---|---|---|
| Moderate preterm* | 78; (14) | 2758; (7) | 2836; (7) |
| Very preterm* | 29; (5) | 638; (2) | 667; (2) |
| Small for gestational age* | 40; (7) | 2641; (6) | 2681; (6) |
| Cesarean section delivery* | 151; (27) | 5928; (14) | 6079; (14) |
| Twin birth* | 48; (9) | 1993; (5) | 2041; (5) |
| Male* | 305; (55) | 20,916; (50) | 21,221; (50) |
| Multiparity* | 406; (73) | 24,010; (58) | 24,416; (58) |
| Birth month* | |||
| January | 23; (4) | 3553; (9) | 3576; (9) |
| February | 6; (1) | 3128; (8) | 3134; (7) |
| March | 11; (2) | 3410; (8) | 3421; (8) |
| April | 14; (3) | 3384; (8) | 3398; (8) |
| May | 20; (4) | 3534; (9) | 3554; (8) |
| June | 20; (4) | 3565; (9) | 3585; (9) |
| July | 22; (4) | 3652; (9) | 3674; (9) |
| August | 32; (6) | 3584; (9) | 3616; (9) |
| September | 55; (10) | 3464; (8) | 3519; (8) |
| October | 128; (23) | 3502; (8) | 3630; (9) |
| November | 141; (25) | 3387; (8) | 3528; (8) |
| December | 83; (15) | 3351; (8) | 3434; (8) |
| Z-score at birth† | 0.3 (−0.5 to 1.1) | 0.2 (−0.4 to 0.9) | 0.2 (−0.4 to 0.9) |
| Birth to epidemic delay† | −3.0 (−8.0 to 1.0) | 0.0 (−13.0 to 13.0) | 0.0 (−13.0 to 13.0) |
| Gestational age† | 39.0 (37.5–40.0) | 39.0 (38.0–40.0) | 39.0 (38.0–40.0) |
*
Data presented as n; (%).
†
Data presented as median (interquartile range).
SARI-WI indicates severe acute respiratory infection with functional impairment.