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Table 5 Age categories-stratified analysis of mediation effect of health literacy

From: The impact of social capital on physical activity and nutrition in China: the mediating effect of health literacy

Model

Path

< 45 years old

45–59 years old

60–69 years old

β

95% CI

p-value

Proportion mediated

β

95% CI

p-value

Proportion mediated

β

95% CI

p-value

Proportion mediated

social participation to physical activity

Total effect (c)

0.803

(0.624, 0.982)

< 0.001

 

0.636

(0.455, 0.816)

< 0.001

 

0.819

(0.682, 0.955)

< 0.001

 

Direct effect (c’)

0.708

(0.526, 0.891)

< 0.001

 

0.537

(0.353, 0.720)

< 0.001

 

0.767

(0.633, 0.902)

< 0.001

 

Indirect effect (a x b)

0.095

(0.037, 0.169)

 

11.83%

0.099

(0.038, 0.176)

 

15.57%

0.051

(0.012, 0.105)

 

6.23%

social networks to physical activity

Total effect (c)

1.551

(1.004, 2.097)

< 0.001

 

1.303

(0.769, 1.837)

< 0.001

 

1.691

(1.332, 2.051)

< 0.001

 

Direct effect (c’)

1.259

(0.716, 1.801)

< 0.001

 

1.131

(0.622, 1.640)

< 0.001

 

1.61

(1.266, 1.955)

< 0.001

 

Indirect effect (a x b)

0.292

(0.114, 0.511)

 

18.83%

0.172

(−0.076, 0.422)

 

–

0.081

(−0.027, 0.212)

 

–

social support to physical activity

Total effect (c)

0.670

(0.509, 0.831)

< 0.001

 

0.809

(0.643, 0.976)

< 0.001

 

0.793

(0.671, 0.915)

< 0.001

 

Direct effect (c’)

0.578

(0.410, 0.747)

< 0.001

 

0.728

(0.549, 0.908)

< 0.001

 

0.744

(0.622, 0.866)

< 0.001

 

Indirect effect (a x b)

0.091

(0.036, 0.158)

 

13.58%

0.081

(0.006, 0.161)

 

10.01%

0.049

(0.013, 0.102)

 

6.18%

Control over life to physical activity

Total effect (c)

0.780

(0.412, 1.149)

< 0.001

 

1.069

(0.673, 1.464)

< 0.001

 

0.935

(0.637, 1.232)

< 0.001

 

Direct effect (c’)

0.598

(0.238, 0.957)

0.001

 

0.87

(0.479, 1.260)

< 0.001

 

0.875

(0.590, 1.161)

< 0.001

 

Indirect effect (a x b)

0.183

(0.062, 0.343)

 

23.46%

0.199

(0.071, 0.372)

 

18.62%

0.059

(−0.033, 0.160)

 

–

feelings about the community to physical activity

Total effect (c)

0.695

(0.373, 1.018)

< 0.001

 

0.917

(0.594, 1.240)

< 0.001

 

0.914

(0.650, 1.179)

< 0.001

 

Direct effect (c’)

0.570

(0.260, 0.880)

< 0.001

 

0.737

(0.413, 1.062)

< 0.001

 

0.846

(0.591, 1.102)

< 0.001

 

Indirect effect (a x b)

0.125

(0.014, 0.258)

 

17.99%

0.18

(0.062, 0.357)

 

19.63%

0.068

(−0.008, 0.160)

 

–

social participation to nutrition

Total effect (c)

0.341

(0.156, 0.526)

< 0.001

 

0.272

(0.102, 0.443)

0.002

 

0.405

(0.272, 0.538)

< 0.001

 

Direct effect (c’)

0.240

(0.051, 0.429)

0.013

 

0.2

(0.024, 0.375)

0.026

 

0.379

(0.244, 0.514)

< 0.001

 

Indirect effect (a x b)

0.102

(0.041, 0.180)

 

29.91%

0.072

(0.020, 0.142)

 

26.47%

0.026

(0.001, 0.063)

 

6.42%

social networks to nutrition

Total effect (c)

1.000

(0.490, 1.509)

< 0.001

 

0.675

(0.199, 1.150)

0.006

 

1.1

(0.779, 1.421)

< 0.001

 

Direct effect (c’)

0.760

(0.249, 1.271)

0.004

 

0.567

(0.098, 1.035)

0.018

 

1.061

(0.743, 1.380)

< 0.001

 

Indirect effect (a x b)

0.239

(0.088, 0.428)

 

23.90%

0.108

(−0.048, 0.278)

 

–

0.039

(−0.013, 0.113)

 

–

social support to nutrition

Total effect (c)

0.394

(0.235, 0.552)

< 0.001

 

0.504

(0.344, 0.663)

< 0.001

 

0.576

(0.466, 0.687)

< 0.001

 

Direct effect (c’)

0.306

(0.139, 0.472)

< 0.001

 

0.456

(0.282, 0.630)

< 0.001

 

0.56

(0.448, 0.673)

< 0.001

 

Indirect effect (a x b)

0.088

(0.033, 0.152)

 

22.34%

0.048

(−0.029, 0.114)

 

–

0.016

(−0.011, 0.047)

 

–

Control over life to nutrition

Total effect (c)

0.833

(0.509, 1.156)

< 0.001

 

0.609

(0.256, 0.963)

0.001

 

0.843

(0.597, 1.089)

< 0.001

 

Direct effect (c’)

0.704

(0.382, 1.026)

< 0.001

 

0.485

(0.127, 0.842)

0.008

 

0.815

(0.572, 1.059)

< 0.001

 

Indirect effect (a x b)

0.129

(0.039, 0.257)

 

15.49%

0.125

(0.030,, 0.258)

 

20.53%

0.027

(−0.013, 0.088)

 

–

feelings about the community to nutrition

Total effect (c)

0.954

(0.686, 1.223)

< 0.001

 

0.956

(0.693, 1.219)

< 0.001

 

1.031

(0.827, 1.235)

< 0.001

 

Direct effect (c’)

0.870

(0.607, 1.134)

< 0.001

 

0.882

(0.610, 1.154)

< 0.001

 

1.003

(0.800, 1.207)

< 0.001

 

Indirect effect (a x b)

0.084

(0.009, 0.170)

 

8.81%

0.074

(0.001, 0.181)

 

7.74%

0.027

(−0.004, 0.075)

 

–

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BMC Public Health

ISSN: 1471-2458

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