Total | 1789 | | 8825 | | | 1789 | | |
First pregnancy | | | | | <0.001 | | | 0.999 |
Yes | 894 | 49.97 | 5592 | 63.37 | | 894 | 49.97 | |
No | 895 | 50.03 | 3233 | 36.63 | | 895 | 50.03 | |
Age (years) | 40.60±10.67 | 36.21±11.84 | <0.001 | 40.55±10.61 | 0.888 |
Age group (years) | | | | | <0.001 | | | 0.999 |
18–34 | 358 | 20.01 | 4228 | 47.91 | | 358 | 20.01 | |
35–55 | 1431 | 79.99 | 4597 | 52.09 | | 1431 | 79.99 | |
Insured premium (new Taiwan dollar) | | | | | <0.001 | | | 0.993 |
<18,000 | 1612 | 90.11 | 7351 | 83.30 | | 1610 | 89.99 | |
18,000–34,999 | 124 | 6.93 | 862 | 9.77 | | 125 | 6.99 | |
≥35,000 | 53 | 2.96 | 612 | 6.93 | | 54 | 3.02 | |
Comorbidities | | | | | | | | |
Anxiety disorder | 786 | 43.94 | 4142 | 46.93 | 0.110 | 787 | 43.99 | 0.973 |
Multiple gestation | 6 | 0.34 | 98 | 1.11 | 0.002 | 5 | 0.28 | 0.763 |
Diabetes mellitus | 220 | 12.30 | 2156 | 24.43 | <0.001 | 221 | 12.35 | 0.959 |
Hypertension | 318 | 17.78 | 2978 | 33.75 | <0.001 | 319 | 17.83 | 0.985 |
Dyslipidemia | 136 | 7.60 | 1814 | 20.56 | <0.001 | 136 | 7.60 | 0.999 |
Uteroplacental ischemia and hemorrhage | 0 | 0 | 11 | 0.12 | 0.230 | 0 | 0 | – |
Reproductive tract infection | 6 | 0.34 | 19 | 0.22 | 0.296 | 6 | 0.34 | 0.999 |
Pre-eclampsia | 3 | 0.17 | 9 | 0.10 | 0.439 | 2 | 0.11 | 0.654 |
Eclampsia | 0 | 0 | 7 | 0.08 | 0.610 | 0 | 0 | – |
Placenta previa | 3 | 0.17 | 16 | 0.18 | 0.901 | 3 | 0.17 | 0.999 |
Abruptio placenta | 0 | 0 | 0 | 0 | – | 0 | 0 | – |
Polycystic ovaries | 2 | 0.11 | 4 | 0.05 | 0.268 | 1 | 0.06 | 0.564 |
Hypogonadism | 0 | 0 | 1 | 0.01 | 0.653 | 0 | 0 | – |
Hypergonadism | 0 | 0 | 0 | 0 | – | 0 | 0 | – |
Pregnancy with history of infertility | 3 | 0.17 | 13 | 0.15 | 0.743 | 2 | 0.11 | 0.654 |
Morbid obesity or overweight | 1 | 0.06 | 8 | 0.09 | 0.645 | 1 | 0.06 | 0.999 |
Location | | | | | <0.001 | | | 0.997 |
Northern Taiwan | 762 | 42.59 | 3032 | 34.36 | | 760 | 42.47 | |
Middle Taiwan | 417 | 23.31 | 1975 | 22.38 | | 418 | 23.37 | |
Southern Taiwan | 453 | 25.32 | 2006 | 22.73 | | 452 | 25.27 | |
Eastern Taiwan | 133 | 7.43 | 1085 | 12.29 | | 137 | 7.66 | |
Outlets islands | 24 | 1.35 | 727 | 8.24 | | 22 | 1.23 | |
Urbanization level | | | | | <0.001 | | | 0.998 |
1 (highest) | 658 | 36.78 | 3004 | 34.04 | | 659 | 36.83 | |
2 | 802 | 44.83 | 3262 | 36.96 | | 800 | 44.72 | |
3 | 111 | 6.20 | 1325 | 15.01 | | 113 | 6.32 | |
4 (lowest) | 218 | 12.19 | 1234 | 13.99 | | 217 | 12.13 | |
Level of care | | | | | <0.001 | | | 0.998 |
Hospital center | 650 | 36.33 | 2897 | 32.83 | | 650 | 36.33 | |
Regional hospital | 744 | 41.59 | 2983 | 33.80 | | 745 | 41.64 | |
Local hospital | 395 | 22.08 | 2945 | 33.37 | | 394 | 22.03 | |