Table 3.
Linear fixed effects regression results predicting PHQ-4 score as a function of green exercise stratified by lockdown status and the interaction of green exercise and state lockdown policies among UAS respondents, over 27 survey waves, March 10, 2020–May 26, 2021.
| Covariatesa |
Lockdown |
Non-Lockdown |
Lockdown Compared to Non-Lockdown |
|||
|---|---|---|---|---|---|---|
| Coefficient | 95% CIb | Coefficient | 95% CIb | Coefficient | 95% CIb | |
| Green exercise | ||||||
| Yes | −0.10**** | (-0.16, −0.05) | −0.09**** | (-0.13,-0.05) | -- | -- |
| No (ref) | -- | -- | -- | -- | -- | -- |
| Lockdown*Green exercise | ||||||
| During lockdown | -- | -- | -- | -- | −0.07* | (-0.13,1.00E-3) |
| No lockdown (ref) | -- | -- | -- | -- | -- | -- |
| Household Income | ||||||
| <25k | −0.06 | (-0.35,0.22) | 0.20 | (-0.10,0.50) | 0.08 | (-0.12,0.27) |
| 25-50k | −0.13 | (-0.38,0.12) | 0.16 | (-0.09,0.41) | −0.13 | (-0.18,0.16) |
| 50-100k | 0.01 | (-0.16,0.18) | −0.02 | (-0.21,0.16) | −0.04 | (-0.16,0.09) |
| 100k+ (ref) | -- | -- | -- | -- | -- | -- |
| Employment Status | ||||||
| Unemployed | −0.01 | (-0.18,0.15) | −0.07 | (-0.20,0.06) | −0.06 | (-0.16,0.05) |
| Employed (ref) | -- | -- | -- | -- | -- | -- |
| N | 6822 | 5474 | 8253 | |||
*p < 0.1, **p < 0.05; ***p < 0.01; ****p < 0.001.
a
Time invariant individual fixed effects included but not shown.
b
Robust standard errors.