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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Psychol Aging. 2013 Dec;28(4):10.1037/a0034000. doi: 10.1037/a0034000

Table 5.

PA Model 3: Age, Global Perceived Stress, & Exposure
PA Model 4: Age, Global Perceived Stress, & Severity
Variable Estimate SE Variable Estimate SE


Fixed Effects Fixed Effects
Intercept 7.3234 0.1655** Intercept 7.3184 0.1616**
Age 0.00263 0.00544 Age 0.00258 0.00539
Previous PA (WP) −0.1767 0.01647** Previous PA (WP) −0.1795 0.01615**
Stressor (BP) 0.00692 1.078 Severity (BP) −0.0113 0.308
Recent Stressor (WP) −1.225 0.08934** Global Perceived Stress (GPS) −0.0777 0.01723**
Previous Stressor (WP) −0.2716 0.06601** Recent Severity (WP) −0.508 0.03298**
Recent Stressor X Age 0.01603 0.00474** Previous Severity (WP) −0.0876 0.0255**
Previous Stress X Age 0.00257 0.00348 Recent Severity X Age 0.00571 0.00173**
Global Perceived Stress (GPS) −0.079 0.0172** Previous Severity X Age 0.00091 0.0013
Recent Stressor X GPS −0.0234 0.01515 Recent Severity X GPS −0.0041 0.00555
Previous Stressor X GPS −0.0033 0.01115 Previous Severity X GPS 0.00172 0.00411


Variance Components Variance Components
          Between person           Between person
Intercept 1.8243 0.2024** Intercept 1.7939 0.1987**
cov(Int, Stressor) −0.2925 0.1359* cov(Int, Severity) −0.0818 0.05135
Stressor 0.2627 0.1367* Severity 0.02748 0.01813
cov(Int, Previous PA) 0.0034 0.02405 cov(Int, Previous PA) 0.000073 0.02354
cov(Stressor, Previous PA) −0.0152 0.01768 cov(Severity, Previous PA) 0.00086 0.00652
Previous PA 0.01235 0.00425** Previous PA 0.00817 0.00448*
          Within person           Within person
Intercept 0.5369 0.04496** Intercept 0.5144 0.04345**
cov(Int, Stressor) −0.2157 0.09263* cov(Int, Severity) −0.0534 0.03348
Stressor 1.5977 0.2544** Severity 0.1483 0.03156**
Residual 1.9745 0.04438** cov(Int, Previous PA) −0.0014 0.0139
cov(Severity, Previous PA) −0.0193 0.0133
Previous PA 0.01405 0.00784*
Residual 1.9766 0.04552**
*

p < .05.

**

p < .01.

Note: Between person (BP) refers to Level 3 (i.e., persons); within person (WP) refers to Levels 2 (i.e., days) and 1 (moments).