|  | CSR groups |  | ||||||
---|---|---|---|---|---|---|---|---|---|
 |  | High | (%) | Average | (%) | Low | (%) | Total | P |
1 min Apgar | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | < 4 | 299 | 1.05 | 3,169 | 1.22 | 672 | 1.52 | 4,140 | <0.01 |
 | 4 – 6 | 1,512 | 5.31 | 12,857 | 4.95 | 2,281 | 5.16 | 16,650 |  |
 | >6 | 26,680 | 93.64 | 243,671 | 93.83 | 41,218 | 93.31 | 311,569 |  |
 | CS |  |  |  |  |  |  |  |  |
 | < 4 | 96 | 1.41 | 918 | 2.38 | 127 | 2.98 | 1,141 | <0.01 |
 | 4 – 6 | 349 | 5.14 | 2,223 | 5.77 | 285 | 6.68 | 2,857 |  |
 | >6 | 6,351 | 93.45 | 35,366 | 91.84 | 3,853 | 90.34 | 45,570 |  |
5 min Apgar | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | < 4 | 32 | 0.11 | 478 | 0.18 | 77 | 0.17 | 587 | <0.01 |
 | 4 – 6 | 180 | 0.63 | 2,533 | 0.98 | 482 | 1.09 | 3195 |  |
 | >6 | 28,279 | 99.26 | 256,686 | 98.84 | 43,609 | 98.73 | 328,574 |  |
 | CS |  |  |  |  |  |  |  |  |
 | < 4 | 11 | 0.16 | 135 | 0.35 | 17 | 0.40 | 163 | <0.01 |
 | 4 – 6 | 51 | 0.75 | 564 | 1.46 | 88 | 2.06 | 703 |  |
 | >6 | 6,734 | 99.09 | 37,808 | 98.18 | 4,160 | 97.54 | 48,702 |  |
RDS | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | Absent | 28,405 | 99.68 | 258,913 | 99.69 | 44,038 | 99.66 | 331,356 | 0.73 |
 | Present | 90 | 0.32 | 816 | 0.31 | 149 | 0.34 | 1,055 |  |
 | CS |  |  |  |  |  |  |  |  |
 | Absent | 6,718 | 98.84 | 38,174 | 99.12 | 4,206 | 98.57 | 49,098 | <0.01 |
 | Present | 79 | 1.16 | 340 | 0.88 | 61 | 1.43 | 480 |  |
MAS | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | Absent | 28,331 | 99.42 | 257,974 | 99.32 | 43,964 | 99.50 | 330,269 | <0.01 |
 | Present | 164 | 0.58 | 1,755 | 0.68 | 223 | 0.50 | 2,142 |  |
 | CS |  |  |  |  |  |  |  |  |
 | Absent | 6,744 | 99.22 | 38,116 | 98.97 | 4,208 | 98.62 | 49,068 | <0.01 |
 | Present | 53 | 0.78 | 398 | 1.03 | 59 | 1.38 | 510 |  |
TTN | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | Absent | 28,425 | 99.75 | 258,814 | 99.65 | 44,022 | 99.63 | 331,261 | <0.01 |
 | Present | 70 | 0.25 | 915 | 0.35 | 165 | 0.37 | 1,150 |  |
 | CS |  |  |  |  |  |  |  |  |
 | Absent | 6,740 | 99.16 | 38,082 | 98.88 | 4,204 | 98.52 | 49,026 | <0.01 |
 | Present | 57 | 0.84 | 432 | 1.12 | 63 | 1.48 | 552 |  |
Intubation/Ventilation | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | Absent | 28,295 | 99.30 | 257,854 | 99.28 | 43,781 | 99.08 | 329,930 | <0.01 |
 | Present | 200 | 0.70 | 1,875 | 0.72 | 406 | 0.92 | 2,481 |  |
 | CS |  |  |  |  |  |  |  |  |
 | Absent | 6,670 | 98.13 | 37,804 | 98.16 | 4,145 | 97.14 | 48,619 | <0.01 |
 | Present | 127 | 1.87 | 710 | 1.84 | 122 | 2.86 | 959 |  |
Admission to specialized neonatal service | Vaginal | Â | Â | Â | Â | Â | Â | Â | Â |
 | Absent | 27,818 | 97.62 | 212,951 | 81.99 | 37,166 | 84.11 | 277,935 | <0.01 |
 | Present | 677 | 2.38 | 46,778 | 18.01 | 7,021 | 15.89 | 54,476 |  |
 | CS |  |  |  |  |  |  |  |  |
 | Absent | 6,459 | 95.03 | 29,950 | 77.76 | 3,319 | 77.78 | 39,728 | <0.01 |
 | Present | 338 | 4.97 | 8,564 | 22.24 | 948 | 22.22 | 9,850 |  |