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Table 1 Weight classification at baseline and year five (including imputed) for men. Values are expressed as frequencies and percent of age group total

From: Changes in body mass index in Canadians over a five-year period: Results of a prospective, population-based study

Baseline Age Time Sample Size* Underweight Normal Weight Overweight Obese Class I Obese Class II Obese Class III
25 – 34 Baseline
Year 5
187
187
2 (1.1)
1 (0.5)
85 (45.5)
70 (37.4)
78 (41.7)
82 (43.9)
18 (9.3)
25 (13.4)
3 (1.6)
7 (3.7)
1 (0.5)
2 (1.1)
35 – 44 Baseline
Year 5
205
205
2 (1.0)
1 (0.5)
70 (34.2)
53 (25.9)
97 (47.3)
106 (51.7)
28 (13.7)
34 (16.6)
5 (2.4)
6 (2.9)
3 (1.5)
5 (2.4)
45 – 54 Baseline
Year 5
564
565
1 (0.2)
3 (0.5)
157 (27.8)
145 (25.7)
288 (51.1)
277 (49.0)
89 (15.8)
104 (18.4)
25 (4.4)
31 (5.5)
4 (0.7)
5 (0.9)
55 – 64 Baseline
Year 5
609
608
2 (0.3)
2 (0.3)
135 (22.2)
132 (21.7)
317 (52.1)
308 (50.7)
125 (20.5)
129 (21.2)
26 (4.3)
33 (5.4)
4 (0.7)
4(0.7)
65 – 74 Baseline
Year 5
705
705
3 (0.4)
3 (0.4)
197 (27.9)
220 (31.2)
361 (51.2)
344 (48.8)
127 (18.0)
117 (16.6)
11 (1.6)
17 (2.4)
6 (0.9)
4 (0.6)
75 + Baseline
Year 5
302
302
2 (0.7)
6 (2.0)
117 (38.7)
137 (45.4)
143 (47.4)
116 (38.4)
32 (10.6)
36 (11.9)
6 (2.0)
5 (1.7)
2 (0.7)
2 (0.7)
  1. * Baseline and year 5 values are not always identical due to rounding in the imputation process.
  2. Underweight = BMI<18; Normal weight = BMI 18.5–24.99; Overweight = BMI 25.0–29.99; Obese Class I = BMI 30.0–34.99; Obese Class II = BMI 35.0–39.99; Obese Class III = BMI ≥ 40.0
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