Table 2. General characteristics.
| Variables | No. of women (%) | |||
|---|---|---|---|---|
| OCUA | Non-OCUA | Total | ||
| Total | 4,239 (1.14) | 367,102 (98.86) | 371,341 (100.0) | |
| Age | ||||
| Mean ± SD | 31.55 ± 4.34 | 31.50 ± 4.03 | 31.5 ± 4.19 | |
| Areaa | ||||
| Metropolitan | 238,416 (64.95) | 238,416 (64.20) | ||
| City | 361 (8.52) | 109,054 (29.71) | 109,415 (29.50) | |
| Rural | 3,878 (91.48) | 19,632 (5.35) | 23,510 (6.30) | |
| Type of insurancea | ||||
| NHI | 4,194 (98.9) | 364,985 (99.40) | 369,179 (99.30) | |
| MA | 45 (1.10) | 2,117 (0.60) | 2,162 (0.70) | |
| Level of Incomeb | ||||
| High (upper 25%) | 1,292 (30.48) | 62,835 (17.12) | 64,127 (17.26) | |
| Medium (25%–75%) | 2,690 (63.46) | 244,922 (66.72) | 247,612 (66.68) | |
| Low (lower 25%) | 257 (6.06) | 59,345 (16.17) | 59,602 (16.05) | |
OCUA = obstetric care underserved areas, SD = standard deviation, NHI = National Health Insurance, MA = medical aid.
aP < 0.05 calculated by χ2 test or t-test between rural area and other groups; bLevel of income was categorized as high level (upper 25% of premium), intermediate level (middle 50%), and low level (lower 25%) based on their national health insurance premium.