Table 2 Comparison of three outcome measures between the intervention (RBWH) and control group (LH) and between the pre- and post-test period

3-month pre-test (Mean ± SD)

3-month post-test (Mean ± SD)

1-year post-test (Mean ± SD)

Rate Ratio (95 % CI)

p-value

06/2005–08/2005

06/2011–08/2011

03/2011–02/2012

3-month post-test vs. 3-month pre-test

Intervention group

70.37 ± 6.59

52.72 ± 1.45

45.07 ± 5.84

0.75 (0.65, 0.86)

<0.0001^**

Control group

74.92 ± 12.52

67.28 ± 3.83

69.69 ± 7.92

0.90 (0.75, 1.08)

0.246

Rate Ratio (95 % CI) Intervention vs. Control

0.94 (0.80, 1.11)

0.78 (0.67, 0.92)

0.65 (0.60, 0.70)

p-value

0.455

0.002^**

<0.0001^**

3-month pre-test (Mean ± SD)

3-month post-test (Mean ± SD)

1-year post-test (Mean ± SD)

Rate Ratio (95 % CI)

p-value

06/2005–08/2005

06/2011–08/2011

03/2011–02/2012

3-month post-test vs. 3-month pre-test

Intervention group

40.12 ± 8.74

26.29 ± 0.84

23.98 ± 3.37

0.66 (0.54, 0.79)

<0.0001^**

Control group

34.38 ± 5.13

42.65 ± 6.23

46.33 ± 6.20

1.24 (0.96, 1.60)

0.093

Rate Ratio (95 % CI) Intervention vs. Control

1.17 (0.92, 1.48)

0.62 (0.50, 0.76)

0.52 (0.47, 0.57)

p-value

0.199

<0.0001^**

<0.0001^**

3-month pre-test (Mean ± SD)

3-month post-test (Mean ± SD)

1-year post-test (Mean ± SD)

Odds Ratio^a (95 % CI)

p-value

06/2005–08/2005

06/2011–08/2011

03/2011–02/2012

3-month post-test vs. 3-month pre-test

Intervention group

56.63 ± 8.46

49.91 ± 2.58

53.34 ± 5.16

0.82 (0.61, 1.11)

0.196

Control group

46.18 ± 4.58

63.20 ± 5.85

66.60 ± 6.34

2.10 (1.36, 3.26)

0.001^**

Odds Ratio^a (95 % CI) Intervention vs. Control

1.29 (0.87, 1.93)

0.61 (0.43, 0.85)

0.59 (0.49, 0.70)

p-value

0.209

0.004^**

<0.0001^**