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Table 2 Comparison of outcomes between trial modes

From: The Devon Active Villages Evaluation (DAVE) trial of a community-level physical activity intervention in rural south-west England: a stepped wedge cluster randomised controlled trial

Outcome

Trial mode

Crude comparison

Adjusted comparison (Intervention minus Control)

 

Intervention

Control

Statistic (I minus C)

Statistic (95% CI)

p-value

ICC

Met physical activity guidelines, %

61.9

63.9

1.03

1.02 (0.88 to 1.17)

0.80

0.008

Number of metabolic equivalent minutes per week, mean (SD)

2317 (2964)

2450 (3014)

155

171 (-16 to 358)

0.07

0.010

Family is interested in physical activity (social norms), %

62.1

59.7

1.13

1.12 (0.98 to 1.26)

0.09

0.008

People around me all seem to be exercising (social norms), %

18.5

18.4

1.03

1.03 (0.87 to 1.23)

0.72

0.039

Physical activity habits, %

51.5

47.5

1.19

1.18 (1.04 to 1.34)

0.009

0.004

Perceived village supportiveness for physical activity, %

8.2

7.7

0.99

0.99 (0.78 to 1.26)

0.94

0.001

Intend to do physical activity within the next 6 months, %

61.3

57.5

0.93

0.93 (0.82 to 1.06)

0.26

0.005

Commitment to physical activity, mean (SD)

5.7 (2.6)

5.5 (2.7)

0.1

0.1 (-0.1 to 0.2)

0.33

0.006

Aware of walking routes/footpaths in the local area, %

94.0

95.0

0.95

0.89 (0.64 to 1.26)

0.52

0.029

Aware of local parks/public green space in the local area, %

80.6

78.8

1.01

1.00 (0.83 to 1.19)

0.96

0.107

Aware of indoor sports facilities in the local area, %

34.4

32.9

1.00

0.97 (0.86 to 1.10)

0.62

0.260

Aware of community centre/village hall in the local area, %

83.9

80.9

1.02

0.97 (0.80 to 1.19)

0.80

0.095

Used recreational facilities within the last month, %

84.9

85.2

0.97

0.94 (0.78 to 1.13)

0.49

0.024

Used at least one recreational facility in the village, %

71.3

72.5

0.96

0.94 (0.82 to 1.09)

0.42

0.084

  1. The trial mode statistics are the mean scores (or overall percentage) within the mode across all five periods (stages). Note that because all comparisons are adjusted for period the direction of effect does not necessarily correspond with the within mode summary statistics. A detailed breakdown of results within each period is shown in Table 3 for ‘Meets physical activity guidelines’ and ‘number of MET minutes per week’.
  2. The comparative statistic is the Mean Difference for quantitative outcomes, and the Odds Ratio for dichotomous outcomes. Sample size ranged from 3892 to 4693 in the intervention mode and 4657 to 5719 in the control mode. Crude analyses adjusted for period. Adjusted analyses adjusted for period, gender, age, and area.