Skip to main content
. Author manuscript; available in PMC: 2007 Apr 17.
Published in final edited form as: Clin J Pain. 2001 Dec;17(4):350–358. doi: 10.1097/00002508-200112000-00010

TABLE 1.

Demographic characteristics of the three gestational age groups

Gestation
23–26 wks (n = 48) 27–29 wks (n = 52) 30–32 wks (n = 36)
Birthweight (g) 808 ± 118 1,053 ± 240 1,260 ± 199
Sex
 Male 25 29 16
 Female 23 23 20
Apgar, 5 min 7.5 ± 1.4 7.8 ± 1.6 8 ± 1.5
Delivery
 Vaginal 21 (44%) 22 (42%) 8 (22%)
 Vaginal breech 7 (14%) 5 (10%) 2 (6%)
 C-section 20 (42%) 25 (48%) 26 (72%)
SNAP-II* day 3 11 ± 8 4 ± 0.5 0 ± 0
Number of procedures† 136 ± 51 79 ± 30 30 ± 17

Mean ± SD.

*

SNAP-II, Score of Neonatal Acute Physiology.

†

Number of invasive procedures from birth to 32-wk, postconceptional-age blood collection.