Table 1.
Characteristics of Pregnancy and Birth Survey 2016 subjects: comparisons by survey method.
| Paper Responses (n = 6029) |
Online Responses (n = 1134) |
AOR | 95% CI | p Value * | |
|---|---|---|---|---|---|
| Maternal age | |||||
| ≤24 years | 497 (83.5%) | 98 (16.5%) | 1.00 | ||
| 25−29 years | 1619 (82.2%) | 350 (17.8%) | 1.10 | 0.86–1.40 | 0.46 |
| 30−34 years | 2175 (84.8%) | 390 (15.2%) | 0.91 | 0.71–1.16 | 0.44 |
| ≥35 years | 1738 (85.4%) | 296 (14.6%) | 0.86 | 0.67–1.11 | 0.25 |
| Area of residence (3 regions of Fukushima) | |||||
| Nakadori (n = 4496) | 3790 (84.3%) | 706 (15.7%) | 1.00 | ||
| Hamadori (n = 1700) | 1425 (83.8%) | 275 (16.2%) | 1.03 | 0.89–1.20 | 0.68 |
| Aizu (n = 967) | 814 (84.2%) | 153 (15.8%) | 1.01 | 0.83–1.22 | 0.93 |
| Parity | |||||
| Primiparous | 2663 (80.8%) | 632 (19.2%) | 1.00 | ||
| Multiparous | 3155 (86.4%) | 495 (13.6%) | 0.68 | 0.59–0.77 | <0.001 |
| Singleton/Twin | |||||
| Singleton | 5975 (84.2%) | 1,125 (15.8%) | 1.00 | ||
| Twin | 52 (85.2%) | 9 (14.8%) | 0.94 | 0.46–1.92 | 0.87 |
* Logistic regression model was used to adjust for age (for items other than age).