Table 2 Delivery descriptive characteristics of study population: singleton term deliveries in Minnesota 2011–2017
Ethnicity/Birthplace n (%) | |||||
|---|---|---|---|---|---|
Neonatal variables | U.S. White | U.S. Black | Somali | Hispanic | Total |
Onset of Labor a | |||||
Spontaneous | 226,823 (76.2) | 15,674 (78.5) | 11,067 (82.4) | 37,049 (82.1) | 290,613 (77.2) |
Induced | 70,875 (23.8) | 4293 (21.5) | 2370 (17.6) | 8063 (17.9) | 85,601 (22.7) |
Total | 297,698 | 19,967 | 13,437 | 45,112 | 376,214 |
Frequency Missing = 1212 | |||||
Gestational Age (weeks) a | |||||
37 | 22,446 (7.5) | 2067 (10.3) | 625 (4.6) | 3968 (8.8) | 29,106 (7.7) |
38 | 44,490 (14.9) | 3670 (18.3) | 1314 (9.7) | 8156 (18.0) | 57,630 (15.3) |
39 | 116,605 (39.0) | 7429 (37.1) | 3568 (26.4) | 17,027 (37.6) | 144,629 (38.3) |
40 | 81,528 (27.3) | 4828 (24.1) | 4169 (30.9) | 11,629 (25.7) | 102,154 (27.1) |
41 | 31,790 (10.6) | 1954 (9.8) | 3044 (22.5) | 4195 (9.3) | 40,983 (10.9) |
42 | 1806 (0.6) | 78 (0.4) | 783 (5.8) | 257 (0.6) | 2924 (0.8) |
Total | 298,665 | 20,026 | 13,503 | 45,232 | 377,426 |
Frequency Missing = 0 | |||||
Sex | |||||
Male | 152,354 (51.1) | 10,078 (50.4) | 6892 (51.2) | 22,811 (50.5) | 192,135 (51.0) |
Female | 145,972 (48.9) | 9902 (49.6) | 6569 (48.8) | 22,351 (49.5) | 184,794 (49.0) |
Total | 298,326 | 19,980 | 13,461 | 45,162 | 376,929 |
Frequency Missing = 497 | |||||
Mode of Delivery a | |||||
Vaginal delivery | 206,320 (69.1) | 13,963 (69.7) | 9272 (68.7) | 32,814 (72.6) | 262,369 (69.5) |
Vaginal birth after cesarean | 13,525 (4.5) | 601 (3.0) | 436 (3.2) | 1351 (3.0) | 15,913 (4.2) |
Primary cesarean delivery | 73,775 (24.7) | 4989 (24.9) | 2873 (21.3) | 9943 (22.0) | 91,580 (24.3) |
Repeat cesarean delivery | 4840 (1.6) | 449 (2.2) | 905 (6.7) | 1091 (2.4) | 7285 (1.9) |
Unknown | 205 (0.1) | 24 (0.1) | 17 (0.1) | 33 (0.1) | 279 (0.1) |
Total | 298,665 | 20,026 | 13,503 | 45,232 | 377,426 |
NICU admission a | 17,324 (5.4) | 2300 (10.3) | 945 (6.6) | 3191 (6.5) | |
Maternal Age (years) b | |||||
Mean (SD) | 30 (5) | 26 (6) | 30 (5) | 27 (6) | |
Gestational Age (weeks) b | |||||
Mean (SD) | 39 (1) | 39 (1) | 40 (1) | 39 (1) | |
Newborn Birthweight (grams) b | |||||
Mean (SD) | 3507 (461) | 3257 (467) | 3434 (460) | 3399 (4667) | |