Table 2 The neonatal outcomes compared by maternal and paternal prepregnancy BMI
Variable | IVF | ICSI | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
A(M&P < 25) | B(M < 25&P ≥ 25) | C(M ≥ 25&P < 25) | D(M&P ≥ 25) | P value a | A(M&P < 25) | B(M < 25&P ≥ 25) | C(M ≥ 25&P < 25) | D(M&P ≥ 25) | P value a | |
Singletons | ||||||||||
 No. of cycles/newborns | 668 | 298 | 93 | 60 |  | 234 | 117 | 42 | 22 |  |
 Cesarean section | 401(60.0) | 179(60.1) | 71(76.3) | 40(66.7) | 0.017 | 128(54.7) | 73(62.4) | 31(73.8) | 13(59.1) | 0.104 |
 Gestational age(wk) | 38.61 ± 1.54 | 38.66 ± 1.58 | 38.22 ± 2.09 | 38.68 ± 1.43 | 0.114 | 38.62 ± 1.67 | 38.84 ± 1.38 | 38.19 ± 2.30 | 38.50 ± 1.68 | 0.184 |
 Premature birth | 45(6.7) | 18(6.0) | 10(10 .8) | 6(10.0) | 0.306 | 15(6.4) | 7(6.0) | 5(11.9) | 3(13.6) | 0.279 |
Gender | 0.008 | Â | 0.268 | |||||||
 Boys | 375(56.1) | 162(54.4) | 36(38.7) | 27(45.0) |  | 120(51.3) | 61(52.1) | 24(57.1) | 7(31.8) |  |
 Girls | 293(43.9) | 136(45.6) | 57(61.3) | 33(55.0) |  | 114(48.7) | 56(47.9) | 18(42.9) | 15(68.2) |  |
 Birth weight(kg) | 3.24 ± 0.47 | 3.31 ± 0.48 | 3.29 ± 0.60 | 3.35 ± 0.55 | 0.098 | 3.29 ± 0.52 | 3.34 ± 0.46 | 3.35 ± 0.70 | 3.38 ± 0.46 | 0.699 |
 Birth weight (kg, boys) | 3.29 ± 0.49 | 3.36 ± 0.48 | 3.27 ± 0.68 | 3.35 ± 0.66 | 0.551 | 3.38 ± 0.46 | 3.33 ± 0.53 | 3.36 ± 0.60 | 3.18 ± 0.30 | 0.693 |
 Birth weight (kg, girls) | 3.17 ± 0.42 | 3.25 ± 0.48 | 3.30 ± 0.56 | 3.35 ± 0.45 | 0.031 | 3.19 ± 0.56 | 3.35 ± 0.38 | 3.34 ± 0.83 | 3.48 ± 0.49 | 0.086 |
 Low birth weight infant | 35(5.2) | 15(5.0) | 11(11.8) | 2(3.3) | 0.086 | 10(4.3) | 5(4.3) | 3(7.1) | 0 | 0.713 |
 Fetal macrosomia | 34(5.1) | 16(5.4) | 7(7.5) | 9(15.0) | 0.030 | 18(7.7) | 9(7.7) | 8(19.0) | 3(13.6) | 0.093 |
 SGA | 52(7.8) | 18(6.0) | 6(6.5) | 3(5.0) | 0.787 | 16(6.8) | 7(6.0) | 2(4.8) | 2(9.1) | 0.909 |
 LGA | 68(10.2) | 48(16.1) | 20(21.5) | 12(20.0) | 0.001 | 29(12.4) | 14(12.0) | 11(26.2) | 7(31.8) | 0.010 |
Twins | ||||||||||
 No. of cycles | 226 | 120 | 37 | 24 |  | 73 | 34 | 5 | 4 |  |
 Cesarean section | 213(94.2) | 116(96.7) | 35(94.6) | 24(100.0) | 0.668 | 71(97.3) | 33(97.1) | 5(100.0) | 4(100.0) | 1.000 |
 Gestational age(wk) | 36.11 ± 1.93 | 35.86 ± 2.10 | 35.65 ± 2.23 | 35.58 ± 2.57 | 0.375 | 36.37 ± 1.59 | 36.29 ± 1.77 | 36.2 ± 1.92 | 36.50 ± 1.73 | 0.989 |
 Premature birth | 115(50.9) | 62(51.7) | 21(56.8) | 14(58.3) | 0.840 | 34(46.6) | 15(44.1) | 2(40.0) | 1(25.0) | 0.906 |
 No. of newborns | 452 | 240 | 74 | 48 |  | 146 | 68 | 10 | 8 |  |
Gender | 0.985 | Â | 0.829 | |||||||
 Boys | 230(50.9) | 125(52.1) | 37(50.0) | 25(52.1) |  | 73(50.0) | 33(48.5) | 4(40.0) | 5(62.5) |  |
 Girls | 222(49.1) | 115(47.9) | 37(50.0) | 23(47.9) |  | 73(50.0) | 35(51.5) | 6(60.0) | 3(37.5) |  |
 Birth weight(kg) | 2.44 ± 0.46 | 2.38 ± 0.47 | 2.41 ± 0.59 | 2.39 ± 0.59 | 0.366 | 2.49 ± 0.49 | 2.46 ± 0.40 | 2.40 ± 0.42 | 2.74 ± 0.38 | 0.382 |
 Birth weight (kg, boys) | 2.48 ± 0.49 | 2.44 ± 0.46 | 2.63 ± 0.62 | 2.42 ± 0.58 | 0.247 | 2.52 ± 0.48 | 2.48 ± 0.51 | 2.69 ± 0.29 | 2.71 ± 0.48 | 0.697 |
 Birth weight (kg, girls) | 2.41 ± 0.43 | 2.31 ± 0.48 | 2.20 ± 0.49 | 2.36 ± 0.60 | 0.031 | 2.47 ± 0.50 | 2.44 ± 0.27 | 2.20 ± 0.40 | 2.80 ± 0.22 | 0.270 |
 Low birth weight infant | 218(48.2) | 134(55.8) | 38(51.4) | 17(35.4) | 0.047 | 67(45.9) | 33(48.5) | 6(60.0) | 1(12.5) | 0.203 |
 Fetal macrosomia | 0 | 0 | 1(1.4) | 0 | 0.150 | 1(0.7) | 0 | 0 | 0 | 1.000 |
 SGA | 153(33.8) | 86(35.8) | 27(36.5) | 10(20.8) | 0.233 | 51(34.9) | 28(41.2) | 5(50.0) | 1(12.5) | 0.315 |
 LGA | 2(0.4) | 0 | 1(1.4) | 0 | 0.322 | 1(0.7) | 0 | 1(10.0) | 0 | 0.149 |