| Before propensity matching | After propensity matching | ||||
---|---|---|---|---|---|---|
Long GnRH-a | Depot GnRH-a | P-value | Long GnRH-a | Depot GnRH-a | P-value | |
Gestational weeks | 38.08 (1.89) | 37.93 (2.05) | 0.121 | 38.17 (1.76) | 38.03(1.98) | 0.270 |
Birth weights(g) | 3133.28 (572.87) | 3042.07 (594.01) | 0.002 | 3165.93 (564.08) | 3059.98 (587.38) | 0.004 |
Fetuses delivered, n (%) | Â | Â | 0.002 | Â | Â | 0.056 |
 Single | 449/581 (77.28) | 1069/1517 (70.47) |  | 367/467 (78.59) | 374/511 (73.19) |  |
 Twins | 132/581 (22.72) | 448/1517 (29.53) |  | 100/467 (21.41) | 137/511 (26.81) |  |
Fetus's sex, n (%) | Â | Â | 0.026 | Â | Â | 0.371 |
 A boy | 251/581 (43.20) | 583/1517 (38.43) |  | 198/467 (41.40) | 201/511 (39.33) |  |
 A girl | 198/581 (34.08) | 486/1517 (32.04) |  | 169/467 (36.19) | 173/511 (33.86) |  |
 Two boys | 40/581 (6.88) | 143/1517 (9.43) |  | 31/467 (6.64) | 40/511 (7.83) |  |
 Two girls | 24/581 (4.13) | 97/1517(6.39) |  | 22/467 (4.71) | 35/511 (6.85) |  |
 A boy and a girl | 68/581 (11.70) | 208/1517 (13.71) |  | 47/467 (10.06) | 62/511 (12.13) |  |
Fetal malformation rate (%) | 5/581 (0.86) | 16/1517 (1.05) | 0.694 | 4/467 (0.86) | 9/511 (1.76) | 0.147 |