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Table 1 Sample characteristics, sport and exercise participation and physical activity levels at baseline, 12-, 16- and 20-year follow up, n = 3384

From: Tracking of sport and exercise types from midlife to old age: a 20-year cohort study of British men

Characteristic Baseline 12 year 16 year 20 year
Age (years, mean ± SD) 48.8 ± 5.5 62.4 ± 5.5 66.4 ± 5.5 68.7 ± 5.5
Overweight/Obese (%, n) 52.6 (1780)    
Current smoker (%, n) 30.5 (1033)    
Manual Occupation (%, n) 51.0 (1727)    
Physically activea (%, n) 65.0 (2175) 70.0 (2297) 62.6 (2037) 65.7 (2180)
Frequent sport/exer. participantsb (%, n) 38.2 (1292) 36.8 (1244) 37.1 (1254) 37.8 (1279)
Sport/exercise change Q1 to Q20
 Persistent non-participants 46.4 (1569)
 Adopters 15.5 (523)
 Dropouts 15.8 (536)
 Persistent participants 22.3 (756)
  1. Data presented are for participants who reported their sport/exercise participation at all four time points (n = 3384)
  2. SD, standard deviation
  3. aPhysically active was classified as at least light activity in a total physical activity index of walking, recreational activity and sport. The sample size was lower for total physical activity than for sport as men with incomplete data from the other domains were not assigned a score. Numbers of men with a valid physical activity score were 3347 at baseline, 3283 at the 12-year follow up, 3255 at the 16-year follow up and 3318 at the 20-year follow up
  4. bFrequent sport and exercise participation (once a month or more)