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Table 1 Mean (SD) baseline characteristics of participants according to group

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

 

Intervention Group

Control Group

Characteristics of clusters

N = 19

N = 18

Number of participants; mean (range)

24 (4 to 147)

22 (4 to 81)

Randomisation stratum, clusters (n, % participants)

 Small (< 20 employees)

11 (114, 25%)

11 (105, 27%)

 Medium (20–50 employees)

5 (167, 37%)

4 (123, 31%)

 Large (> 50 employees)

1 (147, 32%)

2 (144, 36%)

 Schools

2 (29, 6%)

1 (24, 6%)

Characteristics of participants

n = 457

n = 396

Age (years)

44·0 (9·3)

43·0 (10·0)

Female gender; n (%)

329 (72%)

278 (70%)

BMI (kg/m2)

27·2 (5·6)

26·6 (5·3)

Income >£20 k; n (%)

341 (75%)

291 (73%)

Education some higher level; n (%)

295 (65%)

270 (68%)

Marital status married/co-habiting; n (%)

313 (68%)

274 (69%)

Objective PA: pedometer steps (steps/day)

7977 (3602)

7650 (3204)

Objective: physical activity category, n (%)

 High (> 7500 steps/day)

204 (45%)

167 (42%)

 Moderate (> 2500- ≤ 7500 steps/day)

199 (44%)

184 (46%)

 Low (≤2500 steps/day)

11 (2%)

8 (2%)

GPAQ: minutes of work PA (minutes/week)

42 (138)

58 (151)

GPAQ: minutes of MVPA (minutes/week)

296 (342)

344 (333)

GPAQ: physical activity categorya, n (%)

 High

70 (15%)

76 (19%)

 Moderate

140 (31%)

130 (33%)

 Low

141 (31%)

104 (26%)

SF-8: Mental Component Score

48·0 (8·9)

47·7 (9·3)

SF-8: Physical Component Score

52·5 (6·6)

52·7 (7·0)

EQ-5D: Health State

82·4 (13·8)

83·8 (14·3)

EQ-5D: Weighted Health Index

0·89 (0·11)

0·89 (0·12)

WEMWBS: Mental wellbeing scale

50·2 (8·2)

50·3 (8·9)

Physical Activity Self-Efficacy scale

2·91 (0·97)

2·92 (0·94)

HPQ: Four week absolute absenteeism

5·04 (41·3)

3·48 (50·0)

HPQ: Absolute presenteeism

80·3 (13·6)

81·0 (13·4)

HPQ: Combined relative absenteeism and absolute presenteeism

8·84 (12·57)

8·56 (7·32)

  1. aPhysical activity category was derived based on the standardised scoring protocol for the GPAQ (http://www.who.int/ncds/surveillance/steps/GPAQ%20Instrument%20and%20Analysis%20Guide%20v2.pdf)
  2. EQ-5D EuroQol five dimensions, GPAQ Global Physical Activity Questionnaire, HPQ Health and Work Performance Questionnaire, MVPA Moderate- to vigorous-intensity physical activity, NHS National Health Service, PA Physical activity, SD Standard deviation, SF Short Form, WEMWBS Warwick-Edinburgh Mental Wellbeing Scale
  3. Please see Additional file 4 : Table S1 for further details regarding the outcome measures