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. Author manuscript; available in PMC: 2015 Jul 20.
Published in final edited form as: Ann Intern Med. 2015 Jan 20;162(2):90–99. doi: 10.7326/M13-2005

Table 3.

Pregnancy/Delivery/Infant Outcomes

Overall N=671
Delivery outcome
 Live birth 666 (99.3%)
 Stillbirth (IUFD1 ≥ 20 wks) 5 (0.7%)
Number of fetuses
 Singleton 663 (98.8%)
 Twins 8 (1.2%)
Gestational age at delivery
 <37 weeks 96 (14.3%)
 ≥37 weeks 575 (85.7%)
Live Births2 N=666
Delivery type
 Vaginal Delivery 327 (49.1%)
 Cesarean Section 338 (50.8%)
 Missing 1 (0.2%)
Infant birth weight class
 <2.5 kg 80 (12.0%)
 ≥2.5 kg 576 (86.5%)
 Missing 10 (1.5%)
Infant birth size class
 Large for gestational age 40 (6.0%)
 Appropriate for gestational age 579 (86.9%)
 Small for gestational age 44 (6.6%)
 Intrauterine growth restriction 2 (0.3%)
 Missing 1 (0.2%)
Infant HIV status3
 Infected 1 (0.2%)
 Uninfected 549 (82.4%)
 Indeterminate 39 (5.9%)
 Negative, based on best available data 77 (11.6%)
1

IUFD: intra-uterine fetal demise.

2

Certain information not evaluated or not available on still births.

3

Indeterminate: little to no test result information available; Negative, based on best available data: multiple negative tests, did not meet required timing of testing to meet the definition of uninfected.