Targeting Policy for Obesity Prevention: Identifying the Critical Age for Weight Gain in Women
Table 2
Change in maternal prepregnancy bodyweight (kg) compared to the reference weight by year of age, unadjusted and adjusted for parity and year of child’s birth.
Age
Weight (kg)
Unadjusted
Adjusted
Mean
Change by year of age
Weight difference1 (kg)
95% CI
Weight difference1 (kg)
95% CI
16
57.3
—
—
—
—
17
57.8
0.5
0.5
−0.3–1.4
0.4
−0.5–1.2
18
59.4
1.6
2.2
1.3–3.0
1.9
1.1–2.7
19
60.6
1.2
3.3
2.5–4.1
2.9
2.1–3.7
20
62.8
2.2
5.5
4.7–6.3
4.9
4.1–5.7
21
64.3
1.5
7.0
6.2–7.8
6.2
5.4–7.0
22
65.1
0.8
7.9
7.1–8.7
7.0
6.2–7.9
23
66.0
0.9
8.7
7.9–9.5
7.9
7.1–8.7
24
66.6
0.6
9.3
8.5–10.1
8.7
7.9–9.5
25
66.7
0.1
9.4
8.6–10.2
8.7
7.9–9.5
26
67.2
0.5
10.0
9.2–10.7
9.3
8.5–10.1
27
67.1
−0.1
9.8
9.0–10.6
9.0
8.2–9.8
28
67.0
−0.1
9.8
9.0–10.5
9.0
8.2–9.7
29
67.3
0.3
10.0
9.2–10.8
9.0
8.2–9.8
30
67.2
−0.1
9.9
9.1–10.7
8.8
8.0–9.6
31
67.0
−0.2
9.7
9.0–10.5
8.4
7.6–9.2
32
67.2
0.2
9.9
9.1–10.7
8.5
7.7–9.3
33
67.4
0.2
10.2
9.4–10.9
8.6
7.8–9.4
34
67.2
−0.2
9.9
9.1–10.7
8.2
7.3–9.0
35
67.6
0.4
10.3
9.5–11.1
8.4
7.6–9.3
36
67.4
−0.2
10.1
9.3–11.0
8.2
7.4–9.1
37
67.8
0.4
10.5
9.6–11.4
8.5
7.6–9.4
38
67.6
−0.2
10.4
9.4–11.3
8.3
7.3–9.2
39
67.4
−0.2
10.1
9.1–11.1
7.8
6.8–8.8
40
67.4
0
10.1
9.0–11.2
7.8
6.7–8.9
41
68.5
1.1
11.2
9.9–12.5
8.7
7.4–10.1
42
68.2
−0.3
10.9
9.3–12.6
8.5
6.9–10.1
43
69.2
1
11.9
9.6–14.2
9.3
7.0–11.6
44
68.3
−0.9
11.0
8.3–13.7
8.1
5.4–10.9
45
66.2
−2.1
8.9
5.8–12.1
6.5
3.3–9.8
46
65.4
−0.8
8.1
1.7–14.6
5.8
−0.6–12.2
47
65.0
−0.4
7.7
0.2–15.3
4.5
−3.0–12.0
48
71.4
6.4
14.1
−3.1–31.4
9.9
−10.6–30.5
49
62.7
−8.7
5.4
−1.9–12.8
3.3
−5.0–11.6
50
77.5
14.8
20.2
4.3–36.1
17.7
2.5–32.9
1Weight difference compared to baseline weight at age 16 years.
