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Table 2 Weight classification at baseline and year five (including imputed) for women. 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
188
5 (2.7)
4 (2.1)
101 (54.0)
84 (44.7)
50 (26.7)
56 (29.8)
15 (8.0)
25 (13.3)
10 (5.4)
11 (5.9)
6 (3.2)
8 (4.3)
35 – 44 Baseline
Year 5
278
277
3 (1.1)
3 (1.1)
155 (55.8)
140 (50.5)
70 (25.2)
66 (23.8)
34 (12.2)
44 (15.9)
7 (2.5)
16 (5.8)
9 (3.2)
8 (2.9)
45 – 54 Baseline
Year 5
1082
1083
10 (0.9)
12 (1.1)
433 (40.0)
382 (35.3)
377 (34.8)
382 (35.3)
158 (14.6)
189 (17.5)
81 (7.5)
79 (7.3)
23 (2.1)
39 (3.6)
55 – 64 Baseline
Year 5
1564
1562
19 (1.2)
28 (1.8)
526 (33.6)
469 (30.0)
629 (40.2)
623 (39.9)
269 (17.2)
315 (20.2)
87 (5.6)
92 (5.9)
34 (2.2)
35 (2.2)
65 – 74 Baseline
Year 5
1945
1940
37 (1.9)
56 (2.9)
680 (35.0)
692 (35.7)
735 (37.8)
713 (36.8)
362 (18.6)
352 (18.1)
99 (5.1)
99 (5.1)
32 (1.7)
28 (1.4)
75 + Baseline
Year 5
920
918
24 (2.6)
49 (5.3)
367 (39.9)
414 (45.1)
351 (38.2)
317 (34.5)
142 (15.4)
113 (12.3)
32 (3.5)
22 (2.4)
4 (0.4)
3 (0.3)
  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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