Table 3.
Results of regression models testing moderating effect of age on physical health and mental health variables.
| Coeff | SE | t | p | 95% CI | ΔR2 | |
|---|---|---|---|---|---|---|
| Model 1 (outcome = depression score [PHQ2]) | ||||||
| Self-rated health | 0.73 | 0.10 | 7.34 | 0.000 | [0.53, 0.92] | |
| Age | 0.00 | 0.01 | 0.48 | 0.631 | [−0.01, 0.02] | |
| Self-rated health x age | 0.00 | 0.01 | 0.09 | 0.929 | [−0.02, 0.02] | 0.0000 |
| Model 2 (outcome = depression score [PHQ2]) | ||||||
| Past 6-month physical activity | −0.33 | 0.07 | −4.87 | 0.000 | [−0.46, −0.20] | |
| Age | 0.02 | 0.01 | 2.12 | 0.035 | [0.00, 0.04] | |
| Past 6-month physical activity x age | 0.00 | 0.01 | 0.27 | 0.787 | [−0.01, 0.01] | 0.0002 |
| Model 3 (outcome = depression score [PHQ2]) | ||||||
| Pain severity | 0.11 | 0.04 | 3.12 | 0.002 | [0.04, 0.18] | |
| Age | 0.01 | 0.01 | 1.01 | 0.315 | [−0.01, 0.03] | |
| Pain severity x age | −0.00 | 0.00 | −0.22 | 0.824 | [−0.01, 0.01] | 0.0001 |
| Model 4 (outcome = depression score [PHQ2]) | ||||||
| Pain interference | 0.13 | 0.03 | 3.71 | 0.000 | [0.06, 0.19] | |
| Age | 0.00 | 0.01 | 0.39 | 0.697 | [−0.01, 0.02] | |
| Pain interference x age | 0.00 | 0.00 | 0.77 | 0.444 | [−0.00, 0.01] | 0.0014 |
| Model 5 (outcome = anxiety score [GAD2]) | ||||||
| Self-rated health | 0.62 | 0.10 | 5.96 | 0.000 | [0.41, 0.82] | |
| Age | 0.00 | 0.01 | 0.10 | 0.924 | [−0.02, 0.02] | |
| Self-rated health x age | −0.00 | 0.01 | −0.38 | 0.705 | [−0.02, 0.01] | 0.0003 |
| Model 6 (outcome = anxiety score [GAD2]) | ||||||
| Past 6-month physical Activity | −0.19 | 0.07 | −2.58 | 0.010 | [−0.33, −0.04] | |
| Age | 0.01 | 0.01 | 1.08 | 0.279 | [−0.01, 0.03] | |
| Past 6-month physical activity x age | 0.00 | 0.01 | 0.23 | 0.816 | [−0.01, 0.01] | 0.0001 |
| Model 7 (outcome = anxiety score [GAD2]) | ||||||
| Pain severity | 0.16 | 0.04 | 4.42 | 0.000 | [0.09, 0.23] | |
| Age | 0.00 | 0.01 | 0.32 | 0.746 | [−0.01, 0.02] | |
| Pain severity x age | 0.00 | 0.00 | 0.57 | 0.570 | [−0.00, 0.01] | 0.0007 |
| Model 8 (outcome = anxiety score [GAD2]) | ||||||
| Pain interference | 0.17 | 0.03 | 4.82 | 0.000 | [0.10, 0.23] | |
| Age | −0.00 | 0.01 | −0.49 | 0.627 | [−0.02, 0.01] | |
| Pain interference x age | 0.00 | 0.00 | 0.48 | 0.635 | [−0.00, 0.01] | 0.0005 |
| Model 9 (outcome = total depression and anxiety score [PHQ-4]) | ||||||
| Self-rated health | 1.37 | 0.19 | 7.32 | 0.000 | [1.00, 1.74] | |
| Age | 0.01 | 0.02 | 0.39 | 0.698 | [−0.02, 0.04] | |
| Self-rated health x age | −0.00 | 0.02 | −0.04 | 0.971 | [−0.03, 0.03] | 0.0000 |
| Model 10 (outcome = total depression and anxiety score [PHQ-4]) | ||||||
| Past 6-month physical activity | −0.53 | 0.13 | −4.08 | 0.000 | [−0.79, −0.28] | |
| Age | 0.03 | 0.02 | 1.83 | 0.067 | [−0.00, 0.06] | |
| Past 6-month physical activity x age | 0.00 | 0.01 | 0.15 | 0.882 | [−0.02, 0.03] | 0.0001 |
| Model 11 (outcome = total depression and anxiety score [PHQ-4]) | ||||||
| Pain severity | 0.26 | 0.07 | 3.93 | 0.000 | [0.13, 0.39] | |
| Age | 0.01 | 0.02 | 0.73 | 0.463 | [−0.02, 0.05] | |
| Pain severity x age | 0.00 | 0.01 | 0.25 | 0.806 | [−0.01, 0.01] | 0.0001 |
| Model 12 (outcome = total depression and anxiety score [PHQ-4]) | ||||||
| Pain interference | 0.28 | 0.06 | 4.39 | 0.000 | [0.15, 0.40] | |
| Age | 0.00 | 0.02 | 0.10 | 0.922 | [−0.03, 0.04] | |
| Pain interference x age | 0.00 | 0.01 | 0.67 | 0.502 | [−0.01, 0.01] | 0.0011 |