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Table 4 Mediating effects on the short-term (pre-post) intervention effects on change in physical activity (PA) behaviors

From: Mediators of physical activity change in a behavioral modification program for type 2 diabetes patients

 

Steps/day

Self-reported active transport

Self-reported PA house + garden

Self-reported leisure-time PA

Self-reported total PA

Ï„ (SE)

3642.70 (524.40)

98.46 (27.29)

163.97 (76.44)

119.80 (43.47)

336.11 (91.42)

p

<.001

.001

.035

.007

<.001

Mediator: change in social norm from family

Ï„' (SE)

3466.71 (499.45)

79.92 (24.84)

147.59 (71.31)

118.77 (41.17)

311.31 (87.12)

p

<.001

.002

.042

.007

.001

Ï„ - Ï„'

175.99

18.54

16.38

1.03

24.80

t

1.99*

3.35*

1.09

.12

1.41

Proportion mediated

4.8%

18.8%

   

Mediator: change in modeling from family

Ï„' (SE)

3612.85 (516.90)

90.51 (24.55)

146.19 (72.18)

105.11 (41.55)

311.39 (88.35)

p

<.001

.001

.046

.014

.001

Ï„ - Ï„'

29.85

7.95

17.78

14.69

24.72

t

.30

1.41

1.20

2.07*

1.42

Proportion mediated

   

12.2%

 

Mediator: coping with relapse

Ï„' (SE)

3419.58 (516.77)

70.45 (25.11)

146.05 (73.57)

105.50 (42.41)

298.14 (89.00)

p

<.001

.006

.051

.015

.001

Ï„ - Ï„'

223.10

28.01

17.92

14.30

37.97

t

2.36*

4.52*

1.06

2.05*

2.18*

Proportion mediated

6.1%

28.4%

 

11.9%

11.3%

  1. *p < .05
  2. Ï„ = relationship between intervention condition and outcome measure before adjusting for mediator
  3. Ï„' = relationship between intervention condition and outcome measure after adjusting for mediator
  4. SE = standard error
  5. Note: in all analyses, the total sample (n = 92, both control group and intervention group) was included