| Median (min, max), unless stated otherwise | Infants (n=16) |
| Female, n (%) | 10 (62.5) |
| Gestational age at birth, weeks | 39.9 (37.7, 41.7) |
| Weight at birth, kg | 3.3 (2.6, 4.0) |
| Length at birth,b cm | 49.5 (46.0, 55.9) |
| Head circumference at birth,b cm | 34.5 (32.5, 37.0) |
| Normal APGAR score (7 to 10),c n | |
| At 1 min | 16 |
| At 5 min | 16 |
a Mothers who entered the sampling period.
b n=15 (1 infant with missing data).
c APGAR scores range from 0 to 10; scores of 7 to 10 are considered normal.
APGAR, Appearance, Pulse, Grimace, Activity, Respiration; CZP, certolizumab pegol; max, maximum; min, minimum; Q2W, every 2 weeks; Q4W, every 4 weeks.