Table 2.
Associations of trait anxiety with gestation length in women with sponteneous deliveries, provider-intitiated deliveries, and all deliveries
| Spontaneous deliveriesa | Provider-initiated deliveries | All deliveries | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Gestation lengthb | Late preterm | Early term | Full term (reference) | Late preterm | Early term | Full term (reference) | Late preterm | Early term | Full term (reference) | |
| N | 1812 | 9701 | 56 527 | 1 007 | 4535 | 7824 | 2819 | 14054 | 64351 | |
| Unadjusted analyses | OR (95% CI)c | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Anxiety groupsd | Very high | 1.5 (1.1-2.0) | 1.3 (1.2-1.5) | - | 1.7 (1.2-2.3) | 1.3 (1.0-1.6) | - | 1.8 (1.4-2.2) | 1.4 (1.3-1.6) | - |
| High | 1.2 (0.9-1.6) | 1.0 (0.9-1.2) | - | 0.9 (0.6-1.2) | 1.0 (0.9-1.3) | - | 1,2 (1.0-1.5) | 1.1 1.0-1.2) | - | |
| Low | 1.2 (1.1-1.4) | 1.1 (1.0-1.1) | - | 1.1 (1.0-1.3) | 1.1 (1.0-1.2) | - | 1.2 (1.2-1.4) | 1.1 (1.1-1.2) | - | |
| Very low (reference) | - | - | - | - | - | - | - | - | - | |
| Adjusted analyses | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Anxiety groups | Very high | 1.4 (1.0-1.8) | 1.3 (1.1-1.5) | - | 1.7 (1.2-2.4) | 1.3 (1.0-1.6) | - | 1.7 (1.3-2.0) | 1.4 (1.3-1.6) | - |
| High | 1.1 (0.9-1.5) | 1.0 (0.9-1.1) | - | 0.9 (0.6-1.3) | 1.0 (0.9-1.3) | - | 1.1 (0.9-1-4) | 1.1 (1.0-1.2) | - | |
| Low | 1.2 (1.0-1.3) | 1.0 (1.0-1.1) | - | 1.1 (1.0-1.2) | 1.1 (1.0-1.2) | - | 1.2 (1.1-1.3) | 1.1 (1.1-1.2) | - | |
| Very low (reference) | - | - | - | - | - | - | - | - | - | |
aSpontaneous deliveries = deliveries beginning by spontaneous labor or spontaneous rupture of the membranes
bLate preterm: weeks 34-36; early term: weeks 37-38; full term: weeks 39-41
cOR (95% CI): Odds Ratio and 95% Confidence Interval
dCut-points at mean, and ± 2 standard deviations. ‘Very low’ = 1.0-1.25; ‘low to mean = 1.26-1.95; ‘mean to high’ = 1.96-2.30; ‘high’ = 2.31-4.00