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Table 4 Factors associated with adjusted mean differences between physical activity scores reported at baseline and recalled historically, stratified by intensity (n = 3,561)

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

  Moderate-intensity activity score difference Vigorous-intensity activity score difference
  Least squares meanb Least squares meanb
Baseline physical activity scorea   
  1st quartile 78.9 191.1
  2nd quartile 50.8 165.2
  3rd quartile −8.6 96.4
  4th quartile −92.8 −19.8
Sexc   
  Male 16.0 170.1
  Female −1.8 46.4
Racec   
  White −2.1 61.6
  Black 16.3 154.9
Age at Year 0   
  18-24 years 6.9 103.4
  25-30 years 7.2 113.0
Education at Year 15d   
  High school or Less 0.3 99.6
  Some College 3.9 103.6
  College Graduate 17.2 121.5
Body Mass Index at Year 15d   
  Normal weight   (<25 kg/m2) 3.3 97.9
  Overweight   (25–29 kg/m2) 3.5 115.7
  Obese (≥30 kg/m2) 14.4 111.1
Sex & Race Interactionc   
  Black Males 31.4 242.6
  Black Females 1.3 67.2
  White Males 0.6 97.6
  White Females −4.8 25.6
Race & Education Interactionc   
  Black, High School   or Less −1.3 122.1
  Black, Some College 17.0 165.4
  Black, College   Graduate 33.3 177.2
  White, High School   or Less 1.9 77.1
  White, Some   College −9.1 41.8
  White, College Graduate 0.8 65.8
PA Level & Age at Year 0 Interactionc   
  1st quartile,   18–25 years 85.1 200.2
  1st quartile,   26–34 years 70.7 182.0
  2nd quartile,   18–25 years 57.2 166.1
  2nd quartile,   26–34 years 44.6 164.3
  3rd quartile,   18–25 years −14.9 108.4
  3rd quartile,   26–34 years −2.4 84.4
  4th quartile,   18–25 years −99.7 −61.0
  4th quartile,   26–34 years −86.0 21.4
  1. a CARDIA Physical Activity Score = sum (for moderate or vigorous) MET level x months of infrequent activity plus 3 x months of frequent activity.
  2. b Difference scores = Recall – Baseline; positive least squares means represent over-reporting.
  3. c p < 0.05.
  4. d p < 0.05 for moderate-intensity activity score only.