Table 1.
Overall cohort characteristics among 17,075 children from the KAPPA cohort and number and percent caesarean delivery among males (n=8,729) and females (n=8,346)
| KAPPA Cohort n |
Caesarean delivery among males n(%) |
Caesarean delivery among females n(%) |
|
|---|---|---|---|
| All | 17,075 | 2,858 (33) | 2,466 (30) |
| Race/Ethnicity | |||
| Black | 6,363 | 1,180 (36) | 1,025 (33) |
| White | 8,299 | 1,284 (30) | 1,096 (27) |
| Other1 | 2,370 | 392 (32) | 331 (29) |
| Unknown race | 43 | 2 (20) | 14 (42) |
| Hispanic ethnicity | 1,591 | 266 (33) | 223 (29) |
| Preterm Birth (birth at <37 weeks gestation) | |||
| Yes | 1,839 | 481 (49) | 402 (47) |
| No | 15,236 | 2,377 (31) | 2,064 (28) |
| Low Birthweight (birthweight <2500 grams) | |||
| Yes | 1,367 | 383 (58) | 363 (51) |
| No | 15,708 | 2,475 (31) | 2,103 (28) |
| Maternal Education | |||
| <12th grade | 290 | 38 (25) | 36 (26) |
| High school/GED | 2,605 | 439 (33) | 332 (26) |
| Some college or more | 13,143 | 2,194 (33) | 1,919 (30) |
| Missing | 1,037 | 187 (37) | 179 (34) |
| Maternal Asthma2 | |||
| Yes | 2,075 | 409 (38) | 296 (30) |
| No | 15,000 | 2449 (32) | 2,170 (29) |
| Maternal Atopy3 | |||
| Yes | 6,254 | 1,130 (35) | 961 (32) |
| No | 10,821 | 1,728 (31) | 1,505 (28) |
| Maternal Age at Delivery | |||
| <25 | 1,509 | 183 (23) | 114 (16) |
| 25 – <30 | 4,934 | 700 (27) | 590 (25) |
| 30 – <35 | 6,364 | 1,086 (33) | 928 (30) |
| 35 – <40 | 3,494 | 701 (41) | 651 (37) |
| ≥40 | 774 | 188 (49) | 183 (47) |
1
Includes Asian, American Indian, Alaska Native, Native Hawaiian or other Pacific Islander, and children identifying with more than one racial group
2
Maternal asthma defined as one or more diagnosis of asthma (ICD-9 code 493.XX).
3
Maternal atopy defined as one or more diagnosis of allergic rhinitis (ICD-9 code 477.X) or atopic dermatitis (ICD-9 code 691.8)