Table 2 Test for Moderated Mediation Using 95% Confidence Interval.

From: Effects of vigor at work and weekly physical activity on job stress and mental health

Direct Relationships

Standardized Coefficient

t-values

 p-value

Stress → Vigor at work

−0.234

 −4.97

< 0.001 

Vigor → Mental health

−0.473

 −8.65

 < 0.001

Weekly PA → Vigor at work

0.182

 3.83

 < 0.001

Stress × weekly PA → Vigor at work

−0.105

−2.21

 0.027

Moderated indirect relationship

Direct effect

Indirect effect

Confidence interval low/high

p-value

Stress → Vigor at work→ Mental health*

0.189 (4.35)

1.571

0.975/2.373

< 0.001

Probing moderated indirect relationships

Low levels of weekly PA

 

0.945

0.132/1.930

0.021

High levels of weekly PA

 

2.197

1.393/3.230

< 0.001

Index of Moderated Mediation

 

0.050

0.003/0.101

0.036

  1. * = The indirect effect is moderated by the construct of weekly PA.
  2. Standardized Coefficient reported. Value in parentheses is t-value. Bootstrap Sample = 5,000.
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