Table 1. . General characteristics of subjects by birth outcome status.
| Characteristics | Total (n = 181) | FGR (n = 80) | Control (n = 101) | p-value† |
|---|---|---|---|---|
| Birth weight (kg)‡ |
2.85 ± 0.61 |
2.29 ± 0.37 |
3.29 ± 0.34 |
<0.001** |
| Birth length (cm)‡ |
48.80 ± 2.31 |
46.97 ± 2.35 |
50.23 ± 0.74 |
<0.001** |
| Quetelet index (kg/m2)‡,§ |
11.84 ± 1.86 |
10.34 ± 1.33 |
13.02 ± 1.26 |
<0.001** |
| Gestational age (year)‡ |
38.07 ± 2.51 |
36.60 ± 2.93 |
39.25 ± 1.18 |
<0.001** |
| Maternal age (year)‡ |
26.73 ± 4.32 |
26.26 ± 4.82 |
27.11 ± 3.86 |
0.196 |
| Prepregnant BMI (kg/m2)‡ |
19.66 ± 2.18 |
19.65 ± 2.50 |
19.67 ± 1.92 |
0.965 |
| Gender: | 0.063 | |||
| – Male | 93 | 38 | 55 | |
| – Female |
88 |
42 |
46 |
|
| Prenatal vitamin use: | 0.302 | |||
| – Yes | 161 | 69 | 92 | |
| – No |
20 |
11 |
9 |
|
| Birth type: | 0.051 | |||
| – Vaginal delivery | 135 | 54 | 81 | |
| – Cesarean section |
46 |
26 |
20 |
|
| Maternal education: | 0.261 | |||
| – Middle school | 49 | 26 | 23 | |
| – High school | 49 | 18 | 31 | |
| – College |
83 |
36 |
47 |
|
| Monthly income (RMB): | 0.062 | |||
| – <5000 | 81 | 42 | 39 | |
| – ≥5000 | 100 | 38 | 62 |
†p-value calculated using the χ2-test and t-test.
‡Values are shown as mean ± standard deviation.
§Quetelet index was calculated as weight (in kg) divided by the square of height (in m).
**p < 0.01.
FGR: Fetal growth restriction; RMB: Ren Min Bi.