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Table 2 Fifteen-year reproducibility of self-rated physical activity levels in adolescence and early adulthood between baseline and historical recall (n = 3,565)

From: Reproducibility of physical activity recall over fifteen years: longitudinal evidence from the CARDIA study

Self-rated physical activity Baseline physical activitya Historical physical activitya Current physical activitya Percent agreement Weighted kappa
Before high school      
  Inactive 145 (4.1%) 87 (2.4%)   45.4% 0.32
  Somewhat Active 264 (7.4%) 229 (6.4%)    
  Moderately Active 1103 (30.9%) 904 (25.4%)
  Active 722 (20.3%) 657 (18.4%)
  Very active 1330 (37.3%) 1687 (47.3%)
  Missing 1 1
During high school      
  Inactive 93 (2.6%) 58 (1.6%)   51.4% 0.43
  Somewhat Active 266 (7.5%) 242 (6.8%)   
  Moderately active 1021 (28.6%) 804 (22.6%)
  Active 816 (22.9%) 729 (20.4%)
  Very active 1369 (38.4%) 1732 (48.6%)
At baseline      
  Inactive 244 (6.9%) 82 (2.3%) 228 (6.4%) 32.3% b 0.21 b
  Somewhat Active 517 (14.5%) 228 (6.4%) 607 (17.0%) 27.8% c 0.12 c
  Moderately Active 1377 (38.6%) 951 (26.7%) 1581 (44.4%)
  Active 792 (22.2%) 870 (24.4%) 614 (17.2%)
  Very active 633 (17.8%) 1432 (40.2%) 534 (15.0%)
  Missing 2 2 1   
  1. a Baseline Physical Activity = Activity reported at Year 0; Historical Physical Activity = Recalled Baseline Activity reported at Year 15; Current Physical Activity = Activity reported at Year 15.
  2. b Percent agreement and weighted kappa for Baseline and Historical Physical Activity;
  3. c Percent agreement and weighted kappa for Historical and Current Physical Activity.