Table II.
Summary and comparison of the infants in parity.
| Factors | Total population (n=560) | Primiparous (n=220) | Multiparous (n=340) |
|---|---|---|---|
| Malea | 285 (50.9) | 115 (52.3) | 170 (50.0) |
| Femalea | 275 (49.1) | 105 (47.7) | 170 (50.0) |
| Birth weight (g)b | 3219.3±371.5 | 3153.0±364.1 | 3262.3±370.4d |
| Birth height (cm)b | 49.7±1.8 | 49.5±1.9 | 49.8±1.8 |
| Head circumference (cm)b | 33.3±1.5 | 33.1±1.6 | 33.5±1.3d |
| Chest circumference (cm)b | 31.7±1.7 | 31.3±1.8 | 31.9±1.6e |
| Low birth weighta | 8 (1.4) | 5 (2.3) | 3 (0.9)c |
| Placental weight (g)b | 518.0±85.2 | 511.9±78.7 | 522.0±89.0 |
Data are presented as the mean ± standard deviation, except where stated.
a
Presented as a number and a percentage and analyzed using a χ2 test;
b
Compared using a two sample t-test;
c
P<0.05,
d
P<0.01 and
e
P<0.001 compared with primiparous females.