Table 2 General characteristics of subjects
Variables | No. (%) of women | |||
|---|---|---|---|---|
NHI | MA | Total | P value | |
Total | 457,336 (99.1) | 4244 (0.9) | 461,580 (100) | |
Age* | ||||
Mean ± SD | 31.6 ± 4.29 | 32.7 ± 6.57 | 31.6 ± 4.31 | <0.001 |
20-34 | 350,977(76.7) | 2399(56.5) | 353,376(76.6) | <0.001 |
≥ 35 | 106,359(23.3) | 1845(43.5) | 108,204(23.4) | |
Area* | <0.001 | |||
Metropolitan | 192,006 (42.0) | 1687 (39.8) | 193,693 (42.0) | |
City | 228,394(49.9) | 2020(47.6) | 230,414 (49.9) | |
Rural | 36,936 (8.1) | 537 (12.7) | 37,473 (8.1) | |
Level of Income*, a | <0.001 | |||
High (upper 25%) | 115,589 (25.3) | 0 (0.0) | 115,589 (25.0) | |
Medium (25-75%) | 229,966 (50.3) | 0 (0.0) | 229,966 (49.8) | |
Low (lower 25%) | 111,781 (24.4) | 4244(100) | 116,025 (25.1) | |
Charlson comorbidity index | 0.112 | |||
0 | 451,963(98.8) | 4183(98.6) | 456,146(98.8) | |
≥ 1 | 5373(1.2) | 61(1.4) | 5434(1.2) | |