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Table 3 Mean (SD) secondary outcomes at 6 months according to group and ANCOVA results before and after adjusting for season

From: Effectiveness and cost-effectiveness of a loyalty scheme for physical activity behaviour change maintenance: results from a cluster randomised controlled trial

Outcome

Intervention Groupa

Control Groupa

Analysis of covarianceb

Analysis of covariancec

n

Mean (SD)

n

Mean (SD)

b (95% CI)

p-value

b (95% CI)

p-value

GPAQ: minutes of work PA (minutes/week)

253

16 (58)

235

44 (129)

−34 (−65, −2

0.04

−33 (− 65, − 1)

0·04

GPAQ: minutes of MVPA (minutes/week)

231

291·8 (255·8)

221

350·1 (329·4)

−2·8 (− 63·4, 57·9)

0·93

4·1 (−47·1, 55·3)

0·88

SF-8: Mental Component Score

269

48·4 (8·9)

244

47·1 (9·4)

1·1 (−0·3, 2·4)

0·12

1·2 (− 0·2, 2·6)

0·10

SF-8: Physical Component Score

269

50·9 (8·4)

244

51·0 (7·6)

0·43 (−1·3, 2·1)

0·62

0·6 (−0·8, 2·1)

0·38

EQ-5D: Health State

262

78·0 (16·2)

239

78·3 (16·1)

0·7 (−2·4, 3·7)

0·66

0·70 (− 2·5, 3·9)

0·66

EQ-5D: Weighted Health Index

262

0·8 (0·1)

239

0·8 (0·2)

0·01 (−0·02, 0·03)

0·71

0·01 (−0·01, 0·04)

0·37

WEMWBS: Mental wellbeing scale

266

50·3 (8·4)

243

49·4 (8·2)

1·2 (0·2, 2·1)

0·02

1·3 (0·5, 2·2)

< 0·01

HPQ: Four week absolute absenteeism

247

4·0 (66·1)

227

7·0 (51·4)

−2·25 (−12·5, 8·0)

0·67

−2·59 (− 12·8, 7·6)

0·62

HPQ: Absolute presenteeism

261

78·6 (14·6)

236

78·5 (14·2)

0·8 (−1·8, 3·4)

0·54

1·5 (−0·4, 3·4)

0·13

HPQ: Combined relative absenteeism and absolute presenteeism

246

9·5 (24·6)

226

7·9 (4·9)

−0·03 (− 0·9, 0·9)

0·95

− 0·02 (− 0·9, 0·9)

0·96

  1. aMonth six outcomes (unadjusted)
  2. bANCOVA comparison of 6 month means in Intervention vs Control Group adjusted for baseline values of the outcome, and randomisation stratum and corrected for clustering
  3. cANCOVA comparison of 6 month means in Intervention vs Control Group adjusted for baseline values of the outcome, randomisation stratum and season and corrected for clustering
  4. ANCOVA Analysis of Covariance, CI confidence interval, EQ-5D EuroQol five dimensions, GPAQ Global Physical Activity Questionnaire, MVPA moderate- to vigorous-intensity physical activity, NHS National Health Service, PA physical activity, SD standard deviation, SE standard error, SF Short Form, WEMWBS Warwick-Edinburgh Mental Wellbeing Scale