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Table 2 Longitudinal changes in waist circumference, prevalence of abdominal obesitya between 1994–1995 and 2007–2008 in 3,144 subjects. The Tromsø Study

From: Changes in waist circumference and the prevalence of abdominal obesity during 1994–2008 - cross-sectional and longitudinal results from two surveys: the Tromsø Study

   Tromsø 4 (1994–1995) Tromsø 6 (2007–2008) Changes between Tromsø 4 and Tromsø 6
Age in 1994 (birth year) n Mean (SD)b % obese Mean (SD) % obese Mean (95 % CI)c Absolute change in % obese (relative to 1994, %)
Men
 25–34 (1960–69) 62 88.4 (7.8) 4.8 98.2 (10.0) 30.7 9.8 (7.9, 11.6) 25.8 (+538 %)
 35–44 (1950–59) 89 90.9 (7.4) 7.9 98.2 (9.1) 33.7 7.3 (5.8, 8.8) 25.8 (+327 %)
 45–54 (1940–49) 326 96.1 (8.5) 21.8 102.3 (10.5) 46.6 6.2 (5.5, 7.0) 24.8 (+114 %)
 55–64 (1930–39) 850 94.8 (8.2) 18.0 100.6 (10.2) 40.4 5.8 (5.3, 6.3) 22.4 (+124 %)
 65–69 (1925–29) 182 95.1 (7.8) 17.6 100.8 (11.0) 43.4 5.7 (4.7, 6.8) 25.8 (+147 %)
 Total 1,509 94.6 (8.3) 17.6 100.8 (10.4) 41.3 6.1 (5.8, 6.5) 23.7 (+135 %)
Women
 25–34 (1960–69) 76 76.9 (9.1) 10.5 86.3 (10.1) 36.8 9.4 (7.4, 11.4) 26.3 (+250 %)
 35–44 (1950–59) 134 79.2 (9.9) 14.9 91.3 (12.3) 57.5 12.1 (10.6, 13.6) 42.5 (+285 %)
 45–54 (1940–49) 158 80.7 (8.6) 17.7 90.2 (10.0) 58.2 9.6 (8.3, 10.8) 40.5 (+229 %)
 55–64 (1930–39) 973 83.8 (9.8) 26.6 91.9 (11.6) 61.4 8.1 (7.5, 8.6) 34.7 (+130 %)
 65–69 (1925–29) 294 86.5 (9.7) 42.9 93.3 (12.0) 64.0 6.8 (5.8, 7.8) 21.1 (+49 %)
 Total 1,635 83.3 (9.9) 27.0 91.7 (11.6) 60.1 8.4 (8.0, 8.8) 33.1 (+123 %)
  1. aWaist circumference > 102 cm in men and > 88 cm in women
  2. bcentimeter (standard deviation)
  3. cMean change in centimetre (95 % confidence interval)