From: The effect of advanced maternal age on perinatal outcomes in nulliparous singleton pregnancies
Maternal Age Groups | p | ||||||
---|---|---|---|---|---|---|---|
Perinatal Outcomes | Total | < 35 years (a) (n = 471) | 35–39 years (b) (n = 399) | ≥40 years (c) (n = 87) | a vs.b | a vs. c | b vs. c |
Gestational diabetes mellitus | 101 | 27 (5.7) | 57 (14.3) | 15 (17.2) | < 0.001 | < 0.001 | 0.041 |
Gestational hypertension | 58 | 20 (4.2) | 29 (7.2) | 8 (9.2) | < 0.001 | < 0.001 | 0.035 |
Pre-eclampsia | 62 | 22 (4.6) | 31 (7.7) | 8 (9.2) | 0.033 | < 0.001 | 0.457 |
Ablatio placenta | 7 | 2 (0.4) | 4 (1.0) | 1 (1.1) | 0.073 | 0.051 | 0.865 |
Spontaneous preterm delivery before 34 weeks | 83 | 39 (8.2) | 36 (9.0) | 7 (8.0) | 0.469 | 0.754 | 0.601 |
Spontaneous late preterm delivery between 34 and 37 weeks of gestation | 71 | 34 (7.2) | 28 (7.0) | 9 (10.3) | 0.342 | 0.044 | 0.038 |
Prolonged rupture of membranes | 41 | 21 (4.5) | 16 (4.0) | 4 (4.6) | 0.780 | 0.913 | 0.612 |
Small for gestational age | 80 | 21 (4.5) | 48 (12.0) | 11 (11.5) | < 0.001 | < 0.001 | 0.560 |
Large for gestational age | 21 | 7 (1.5) | 12 (3.0) | 2 (2.3) | 0.072 | 0.134 | 0.411 |
Placenta previa | 24 | 13 (2.8) | 9 (2.2) | 2 (2.3) | 0.613 | 0.218 | 0.891 |
Post-term pregnancy | 66 | 41 (8.7) | 21 (5.3) | 4 (4.6) | 0.021 | < 0.001 | 0.139 |
Operative vaginal delivery | 16 | 9 (1.9) | 6 (1.5) | 1 (1.1) | 0.451 | 0.112 | 0.207 |
Cesarean delivery | 396 | 175 (37.1) | 167 (41.8) | 44 (50.5) | 0.029 | < 0.001 | 0.040 |