TABLE 7.
Sensitivity analyses using complete case analysis and eliminating postpartum interviews compared with main analyses results
| Variable | All CP outcomes
|
sCP outcomes
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vaginal infections
|
Fever
|
Vaginal infections
|
Untreated vaginal infections
|
Smoking >10cigarettes/d
|
||||||
| aHRa | 95% CI | aHR | 95% CI | aHR | 95% CI | aHR | 95% CI | aHR | 95% CI | |
| Main analysis | 1.52 | (1.04–2.24) | 1.53 | (1.06–2.21) | 1.73 | (1.16–2.60) | 1.95 | (1.16–3.26) | 1.8 | (1.10–2.94) |
|
| ||||||||||
| Complete case analysis | 1.5 | (0.88–2.53) | 1.52 | (1.09–2.12) | 1.71 | (1.01–2.88) | 1.86 | (1.01–3.45) | 1.89 | (1.23–2.91) |
|
| ||||||||||
| Postpartum interviews eliminated | 1.52 | (0.89–2.61) | 1.53 | (1.10–2.12) | 1.73 | (1.01– 2.97) | 1.95 | (1.04–3.65) | 1.8 | (1.17–2.75) |
aHR, adjusted hazard ratio; CI, confidence interval; CP, cerebal palsy; sCP, spastic cerebal palsy.
a
All adjusted for maternal age (younger than 35, 35–39, 40–44, 45 years old or older), alcohol drinks per week (never, 1, 2–4, 5), binge drinking, combined socioeconomic status group (1, 2, 3), season of birth (fall, winter, spring, summer), number per household (1, 2, 3, 4), birth year (before 2000, 2000 or later), and smoking (0, 1–9, 10 cigarettes per day) except in analysis in which smoking is an exposure.
Streja. Cerebral palsy, smoking, and maternal infections. Am J Obstet Gynecol 2013.