Fundal Height Growth Curve for Underweight and Overweight and Obese Pregnant Women in Thai Population
Table 1
Characteristics of pregnant women.
Characteristics
Prepregnancy BMI (kg/m2)
Global
value*
Underweight (<18.5)
Normal weight (18.5–24.9)
Overweight and obese (≥25.0)
(; 1,486 visits)
(; 4,756 visits)
(; 1,281 visits)
Mean
±SD
Mean
±SD
Mean
±SD
Maternal age (year)
22.8
±5.0
25.9
±6.3
28.1
±5.7
<0.001
Maternal height (cm)
157.5
±6.1
155.6
±5.4
156.1
±5.6
0.011
Prepregnancy weight (kg)
42.9
±4.0
51.5
±5.4
69.0
±8.0
<0.001
Prepregnancy BMI (kg/m2)
17.3
±1.1
21.2
±1.8
28.3
±2.7
<0.001
Total weight gain (kg)
13.9
±4.0
13.9
±4.5
11.2
±5.2
<0.001
Gestational weight gain** (, %)
<0.001
Less than recommended
79
38.0
197
29.9
27
16.0
Within recommended
99
47.6
273
41.4
56
33.1
More than recommended
30
14.4
189
28.7
86
50.9
Parity (, %)
<0.001
Nulliparous
143
68.7
333
50.4
47
27.8
Multiparous
65
31.3
328
49.6
122
72.2
GA at delivery (wk)
39.1
±1.1
39.2
±1.1
39.3
±1.1
0.107
Infant’s sex (, %)
0.918
Female
101
48.6
294
44.5
84
49.7
Male
107
51.4
367
55.5
85
50.3
Birth weight (gm)
3,035.0
±318.4
3,126.5
±327.0
3,201.0
±302.3
<0.001
Settings (, %)
0.754
Secondary care hospitals
140
67.3
445
67.3
111
65.7
Tertiary care hospitals
68
32.7
216
32.7
58
34.3
Gestational age by (, %)
0.051
LMP
115
55.3
424
64.2
109
64.5
Ultrasound
93
44.7
237
35.8
60
35.5
GA at first ANC (wk)
14.2
±5.2
12.7
±4.8
12.6
±4.9
0.001
GA at ultrasound (wk)
16.9
±5.4
15.8
±5.1
15.2
±5.3
0.037
Frequency of ANC (per woman)
6.9
±2.2
7.3
±2.1
7.5
±2.2
0.020
BMI: body mass index; GA: gestational age; LMP: last menstrual period; ANC: antenatal care. value from nonparametric tests for trend. Recommendations by the Institute of Medicine (2009) [11]: underweight prepregnancy BMI (<18.5 kg/m2) = 12.5–18 kg; normal weight (18.5–24.9 kg/m2) = 11.5–16 kg; overweight (25.0–29.9 kg/m2) = 7–11.5 kg; obese (≥30.0 kg/m2) = 5–9 kg.
