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Table 2 Adjusted associations between academic achievement and physical activity/sedentary variables from multiple multilevel linear regression models

From: Revising on the run or studying on the sofa: prospective associations between physical activity, sedentary behaviour, and exam results in British adolescents

  Total pointsa
Β (95 % CI) P value
In separate models
 Sedentary time (hr/day) 6·9 (1·5, 12·4) 0·016
 MVPA (min/day) −1·8 (−7·5, 3·8) 0·497
 Screen time (hr/day) −9·3 (−14·3, −4·3) 0·001
 Non-screen sedentary (hr/day) 23·1 (14·6, 31·6) <0·001
Mutually adjusted
 Sedentary time (hr/day) 6·2 (0·6, 11·9) 0·033
 MVPA (min/day) 1·0 (−5·7, 5·8) 0·996
 Screen time (hr/day) −9·1 (−14·5, −3·7) 0·003
 Non-screen sedentary (hr/day) 24·7 (17·3, 32·0) <0·001
Quadratic functions
 Non-screen sedentary quadratic (hr/day)^2 −8·3 (−12·3, −4·3) <0·001
 Non-screen sedentary (hr/day) 67·6 (44·8, 90·3) <0·001
  1. All models clustered for school and adjusted for MFQ, BMI z-score, deprivation, season of physical activity measurement, and sex
  2. aCalculated to include GCSE and GNVQ results e.g., for GCSEs A* = 58, A = 52…G = 16, and similar for GNVQ grades
  3. Sedentary hr/day spent <1.5 METS
  4. MVPA mean mins/day spent in moderate and vigorous physical activity above 4 METS
  5. Screen time sedentary includes self-reported time spent in TV/DVD, Internet and Computer games
  6. Non Screen time sedentary includes self-reported time spent in homework and reading
  7. Quadratic functions are only shown if significant