Table 2.
Pregnancy outcomes in the two age groups
| Overall | Age lower than 25 | Age 25 or older | OR (95% CI) | P value* | |
|---|---|---|---|---|---|
| HIV viral load <50 copies/ml at third trimester (n:1737), %: | 64·6 (1122/1737) | 58·2 (92/158) | 65·2 (1030/1579) | 0·74 (0·53–1·04) | 0·080 |
| Pregnancy not ending in a live birth (n: 2556), % | 13·7 (351/2556) | 12·2 (27/221) | 13·9 (324/2335) | 0·86 (0·57–1·31) | 0·494 |
| Pre-term delivery (<37 weeks) (n: 2175), % | 20·4 (443/2175) | 15·8 (30/190) | 20·8 (413/1985) | 0·71 (0·48–1·07) | 0·102 |
| Very pre-term delivery (<32 weeks) (n: 2175), % | 2·4 (53/2175) | 1·6 (3/190) | 2·5 (50/1985) | 0·62 (0·19–2·01) | 0·426 |
| Low birthweight (<2500 g) (n: 2096), % | 23·3 (489/2096) | 21·7 (39/180) | 23·5 (450/1916) | 0·90 (0·62–1·30) | 0·581 |
| Very low birthweight (<1500 g) (n: 2096), % | 3·1 (66/2096) | 1·7 (3/180) | 3·3 (63/1916) | 0·50 (0·15–1·60) | 0·243 |
| Small by gestational age (n: 1923), %† | 12·2 (235/1923) | 14·3 (24/168) | 12·0 (211/1755) | 1·22 (0·77–1·92) | 0·393 |
| HIV transmission (n: 1685), % | 1·3 (22/1685) | 2·8 (4/145) | 1·2 (18/1540) | 2·40 (0·80–7·18) | 0·118 |
| Birth defects (n: 2185), %‡ | 3·8 (84/2185) | 4·8 (9/187) | 3·8 (75/1998) | 1·30 (0·64–2·63) | 0·473 |
OR, odds ratio; CI, confidence interval.
*
χ2.
†
Birthweight <10th percentile by age and gender, singletons only.
‡
Livebirths only.