Table 4 Percentage of women staying within baseline weight category versus switching to another category
Age at baseline(years) | Category at Baseline | Underweight At Year 5 (95% CI) | Normal Weight At Year 5 (95% CI) | Overweight At Year 5 (95% CI) | Obese Class I At Year 5 (95% CI) | Obese Class II At year 5 (95% CI) | Obese Class III At Year 5 (95% CI) |
|---|---|---|---|---|---|---|---|
25 – 34 | Underweight | 54.4 (18.1–89.8) | 36.8 (3.4–72.2) | 1.7 (0.0–10.4) | 1.8 (0.0–11.3) | 1.8 (0.0–10.7) | 3.5 (0.0–18.2) |
|  | Normal Weight | 1.0 (0.0–3.7) | 75.5 (65.9–84.4) | 22.8 (13.7–31.8) | 0.4 (0.0–2.0) | 0.1 (0.0–0.5) | 0.2 (0.0–1.0) |
|  | Overweight | 0.2 (0.0–1.1) | 10.5 (2.6–19.7) | 56.9 (41.5–71.4) | 29.5 (16.2–43.2) | 2.5 (0.0–7.0) | 0.4 (0.0–2.0) |
|  | Obese Class I | 0.6 (0.0–3.5) | 0.7 (0.0–4.2) | 24.5 (4.5–47.1) | 51.6 (24.9–75.8) | 8.6 (0.0–23.7) | 14.0 (0.7–30.7) |
|  | Obese Class II | 0.9 (0.0–5.5) | 1.0 (0.0–5.9) | 1.0 (0.0–5.6) | 14.6 (0.0–37.7) | 57.7 (29.0–88.6) | 24.8 (1.8–50.2) |
|  | Obese Class III | 1.5 (0.0–9.2) | 1.5 (0.0–9.1) | 1.5 (0.0–9.0) | 1.6 (0.0–9.3) | 34.5 (3.1–68.5) | 59.3 (23.8–92.3) |
35 – 44 | Underweight | 2.5 (0.0–15.5) | 84.1 (48.6–100.0) | 2.6 (0.0–15.4) | 2.7 (0.0–16.5) | 2.7 (0.0–16.9) | 5.4 (0.0–28.3) |
|  | Normal Weight | 2.1 (0.1–4.6) | 82.7 (76.3–89.1) | 13.6 (7.8–19.3) | 1.4 (0.1–3.4) | 0.1 (0.0–0.4) | 0.1 (0.0–0.7) |
|  | Overweight | 0.2 (0.0–0.9) | 12.5 (4.6–21.4) | 58.3 (45.2–70.6) | 28.5 (17.8–40.4) | 0.3 (0.0–1.9) | 0.3 (0.0–1.6) |
|  | Obese Class I | 0.3 (0.0–1.6) | 0.3 (0.0–2.1) | 12.5 (2.1–24.9) | 59.8 (42.0–77.6) | 26.2 (10.9–42.8) | 0.9 (0.0–4.5) |
|  | Obese Class II | 1.3 (0.0–7.6) | 1.4 (0.0–8.3) | 1.4 (0.0–8.0) | 20.9 (0.0–52.3) | 58.9 (22.4–96.4) | 16.3 (0.0–47.8) |
|  | Obese Class III | 1.0 (0.0–5.8) | 1.0 (0.0–5.9) | 1.1 (0.0–6.5) | 1.0 (0.0–6.3) | 24.3 (0.9–50.3) | 71.6 (43.4–96.5) |
45 – 54 | Underweight | 56.9 (28.8–84.3) | 38.5 (12.3–65.9) | 0.9 (0.0–5.6) | 1.0 (0.0–6.1) | 0.9 (0.0–5.1) | 1.9 (0.0–9.9) |
|  | Normal Weight | 1.4 (0.3–2.7) | 78.7 (74.5–82.8) | 19.3 (15.3–23.1) | 0.6 (0.0–1.3) | 0.0 (0.0–0.1) | 0.0 (0.0–0.2) |
|  | Overweight | 0.0 (0.0–0.2) | 9.7 (6.6–13.2) | 68.2 (62.8–73.2) | 20.7 (16.4–25.3) | 1.4 (0.4–2.7) | 0.1 (0.0–0.3) |
|  | Obese Class I | 0.1 (0.0–0.4) | 0.7 (0.0–2.1) | 21.3 (14.5–28.4) | 61.3 (53.2–69.5) | 15.8 (9.7–22.0) | 0.8 (0.0–2.2) |
|  | Obese Class II | 0.1 (0.0–0.7) | 0.1 (0.0–0.7) | 7.5 (2.6–13.4) | 14.4 (6.4–22.8) | 54.7 (43.0–65.7) | 23.1 (14.0–32.6) |
|  | Obese Class III | 0.4 (0.0–2.6) | 0.4 (0.0–2.4) | 0.4 (0.0–2.6) | 0.6 (0.0–3.7) | 17.8 (1.8–35.4) | 80.4 (62.3–96.8) |
55 – 64 | Underweight | 51.2 (28.4–74.2) | 46.3 (23.5–68.9) | 0.5 (0.0–3.0) | 0.5 (0.0–2.9) | 0.5 (0.0–3.1) | 1.0 (0.0–5.3) |
|  | Normal Weight | 3.0 (1.5–4.7) | 73.9 (69.8–77.7) | 22.4 (18.7–26.2) | 0.6 (0.1–1.4) | 0.0 (0.0–0.1) | 0.0 (0.0–0.2) |
|  | Overweight | 0.3 (0.0–0.8) | 11.1 (8.4–13.8) | 71.5 (67.6–75.3) | 16.9 (13.9–20.2) | 0.2 (0.0–0.6) | 0.0 (0.0–0.2) |
|  | Obese Class I | 0.0 (0.0–0.2) | 0.8 (0.0–1.9) | 19.5 (14.5–24.7) | 68.1 (62.0–74.1) | 10.7 (6.8–14.9) | 0.8 (0.0–1.9) |
|  | Obese Class II | 0.1 (0.0–0.7) | 1.2 (0.0–3.7) | 2.5 (0.1–5.8) | 23.4 (14.3–33.5) | 59.1 (47.8–70.0) | 13.6 (6.3–21.2) |
|  | Obese Class III | 0.3 (0.0–1.6) | 0.3 (0.0–1.7) | 0.3 (0.0–1.7) | 6.1 (0.4–14.1) | 31.0 (15.7–46.6) | 62.0 (45.3–77.5) |
65 – 74 | Underweight | 73.2 (58.8–87.6) | 25.5 (12.2–40.7) | 0.3 (0.0–1.6) | 0.3 (0.0–1.6) | 0.3 (0.0–1.6) | 0.5 (0.0–2.7) |
|  | Normal Weight | 3.8 (2.2–5.4) | 82.1 (78.9–85.2) | 13.3 (10.6–16.1) | 0.6 (0.1–1.3) | 0.2 (0.0–0.5) | 0.0 (0.0–0.2) |
|  | Overweight | 0.4 (0.0–0.9) | 16.7 (13.8–19.5) | 73.1 (69.5–76.6) | 9.5 (7.1–11.8) | 0.3 (0.0–0.7) | 0.0 (0.0–0.1) |
|  | Obese Class I | 0.0 (0.0–0.2) | 1.2 (0.2–2.3) | 21.8 (17.3–26.6) | 69.6 (64.5–74.7) | 6.7 (4.1–9.6) | 0.6 (0.0–1.4) |
|  | Obese Class II | 0.1 (0.0–0.6) | 0.1 (0.0–0.5) | 7.2 (2.5–12.1) | 26.4 (16.8–35.5) | 61.9 (51.0–71.6) | 4.3 (0.7–8.8) |
|  | Obese Class III | 0.3 (0.0–1.8) | 0.3 (0.0–2.0) | 0.3 (0.0–1.9) | 0.5 (0.0–2.9) | 30.6 (14.3–47.4) | 68.0 (50.5–83.9) |
75 + | Underweight | 76.4 (55.5–94.3) | 21.6 (2.9–40.8) | 0.4 (0.0–2.6) | 0.4 (0.0–2.2) | 0.4 (0.0–2.6) | 0.8 (0.0–4.2) |
|  | Normal Weight | 8.2 (5.1–11.7) | 82.0 (77.4–86.5) | 9.6 (6.4–13.1) | 0.1 (0.0–0.5) | 0.0 (0.0–0.2) | 0.1 (0.0–0.3) |
|  | Overweight | 0.1 (0.0–0.4) | 29.9 (24.3–35.2) | 63.1 (57.2–68.8) | 6.8 (4.1–9.7) | 0.0 (0.0–0.2) | 0.1 (0.0–0.3) |
|  | Obese Class I | 0.1 (0.0–0.4) | 2.1 (0.1–4.8) | 41.1 (31.7–49.8) | 53.8 (44.6–63.0) | 2.7 (0.4–5.7) | 0.1 (0.0–0.7) |
|  | Obese Class II | 0.3 (0.0–1.9) | 0.3 (0.0–1.7) | 7.1 (0.4–16.4) | 39.7 (21.9–59.1) | 50.8 (32.2–70.1) | 1.8 (0.0–8.0) |
|  | Obese Class III | 2.1 (0.0–12.2) | 2.2 (0.0–13.2) | 2.1 (0.0–12.7) | 3.4 (0.0–21.3) | 27.0 (0.0–70.9) | 63.3 (20.2–100.0) |