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Table 5 Moderators of change in autonomous motivation for exercise (B-coefficients and 95% CIs from linear regression models)

From: Psychosocial mediators of change in physical activity in the Welsh national exercise referral scheme: secondary analysis of a randomised controlled trial

Relative Autonomy Index (RAI) intervention effect in subgroups
  Gender (subgroup 1 = female N = 680, 2 = male N = 364) Reason for referral (1 = CHD N = 783 2 = Mental health N = 261) Age (1 = 16-44 N = 246, 2 = 45-59 N = 362, 3 = 60+ N = 421) Deprivation (1 = low N = 371 2 = medium N = 371 3 = high N = 272) Baseline PA (1 = inactive N = 622 2 = moderately inactive N = 150 3 = active N = 263)
Subgroup 1 0.31 0.33 0.36 0.24 0.40
(0.17 to 0.46) (0.20 to 0.46) (0.12 to 0.59) (0.05 to 0.43) (0.26 to 0.54)
Subgroup 2 0.31 0.29 0.32 0.36 0.46
(0.11 to 0.50) (0.06 to 0.52) (0.12 to 0.51) (0.16 to 0.55) (0.15 to 0.76)
Subgroup 3    0.33 0.39 0.07
   (0.15 to 0.51) (0.17 to 0.62) (-0.17 to 0.31)
Interaction effects (whole sample)
  N = 1096 N = 1096 N = 1096 N = 1063 N = 1096
Trial effects 0.31 0.33 0.34 0.24 0.40
(-0.03 to 0.65) (0.20 to 0.46) (0.10 to 0.58) (0.05 to 0.43) (0.26 to 0.55)
Moderator Subgroup 2vs1 0.04 0.05 0.25 -0.13 0.21
(-0.13 to 0.21) (-0.14 to 0.24) (0.04 to 0.47) (-0.44 to 0.06) (-0.03 to 0.45)
Subgroup 3vs1    0.57 0.01 0.57
   (0.36 to 0.77) (-0.19 to 0.22) (0.38 to 0.77)
Interaction effects Subgroup 2vs1 0.01 -0.03 -0.03 0.13 0.00
(-0.23 to 0.25) (-0.29 to 0.23) (-0.33 to 0.28) (-0.14 to 0.41) (-0.33to 0.33)
Subgroup 3vs1    -0.01 0.13 -0.31
   (-0.30 to 0.29) (-0.15 to 0.42) (-0.58 to -0.05)
  1. Significant associations (p < 0.05) in bold.