Table 1 Group descriptive statistics for children with ASD as a function of the frequency and severity of their mothers’ nausea and vomiting during pregnancy
|  | No nausea and vomiting during pregnancy (n = 58) | Occasional nausea but no vomiting (n = 71) | Daily nausea but no vomiting (n = 58) | Occasional vomiting with or without nausea (n = 41) | Daily nausea and vomiting (n = 59) |
|---|---|---|---|---|---|
Child sex (%, n)a | |||||
 Male | 20.7 (47) | 28.6 (65) | 18.9 (43) | 14.1 (32) | 17.6 (40) |
 Female | 18.3 (11) | 10.0 (6) | 25.0 (15) | 15.0 (9) | 31.7 (19) |
Maternal preeclampsia during pregnancy (%, n) | |||||
 No | 20.9 (55) | 24.0 (63) | 20.5 (54) | 13.3 (36) | 21.3 (56) |
 Yes | 12.5 (3) | 33.3 (8) | 16.7 (4) | 25.0 (3) | 12.5 (3) |
Fetal growth restriction (%, n) | |||||
 No | 19.5 (43) | 24.4 (54) | 19.9 (44) | 15.8 (35) | 20.4 (45) |
 Yes | 15.8 (6) | 26.3 (10) | 18.4 (7) | 13.2 (5) | 26.3 (10) |
Child required breathing assistance after birth (%, n) | |||||
 Not required | 20.2 (50) | 25.9 (64) | 21.1 (52) | 13.4 (33) | 19.4 (48) |
 Required | 21.1 (8) | 18.4 (7) | 15.8 (6) | 18.4 (7) | 26.3 (10) |
Child required special nursery care after birth (%, n) | |||||
 Not required | 21.2 (47) | 23.0 (51) | 19.4 (43) | 15.8 (35) | 20.7 (46) |
 Required | 17.7 (11) | 30.6 (19) | 24.2 (15) | 8.1 (5) | 19.4 (12) |
Child’s gestational age at birth (weeks) | |||||
 Mean (SD, n) | 38.75 (2.42, 55) | 38.61 (2.56, 70) | 38.25 (2.86, 56) | 38.71 (2.16, 41) | 39.02 (1.75, 57) |
Maternal age at conception (years)b | |||||
 Mean (SD, n) | 31.74 (5.61, 58) | 32.25 (5.11, 71) | 31.73 (4.99, 58) | 29.80 (5.45, 41) | 30.46 (4.91, 58) |
Paternal age at conception (years) | |||||
 Mean (SD, n) | 34.12 (5.29, 57) | 35.26 (6.23, 70) | 33.33 (6.17, 58) | 31.33 (6.10, 41) | 33.34 (6.34, 58) |
Child age at time of ASD diagnosis (years) | |||||
 Mean (SD, n) | 4.26 (2.88, 58) | 4.69 (2.74, 65) | 4.25 (2.84, 57) | 5.05 (3.01, 38) | 5.42 (3.67, 57) |
Child age at time of data collection (years) | |||||
 Mean (SD, n) | 7.94 (3.31, 58) | 7.67 (3.76, 71) | 8.52 (3.63, 58) | 9.11 (4.35, 41) | 8.54 (4.41, 59) |