TABLE 1.
Baseline characteristics of subjects
| Ketamine (n = 153) | Saline (n = 155) | p | |
|---|---|---|---|
| Age (years) | 30 ± 4 | 30 ± 3 | .749 |
| Body mass index (kg/m2) | 29 ± 3 | 28 ± 3 | .346 |
| Employment | 121 (79.1%) | 113 (72.9%) | .284 |
| Partner employment | 141 (92.2%) | 147 (94.8%) | .365 |
| Fetus | |||
| First‐born | 111 (72.6%) | 117 (75.5%) | .557 |
| Second‐born | 42 (27.4%) | 38 (24.5%) | .557 |
| Gestational age (day) | 270 ± 9 | 269 ± 11 | .525 |
| Pregnancy with obstetric disease | 41 (26.5%) | 45 (29%) | .662 |
| Neonatal gender | |||
| Male | 67 (43.8%) | 82 (52.9%) | .110 |
| Female | 86 (56.2%) | 73 (47.1%) | .110 |
| Neonatal body weight (g) | 3,312 ± 433 | 3,371 ± 329 | .179 |