Table 2 Effects of the intervention on adherence to the Planetary Health Diet Index and on food-related greenhouse gas emissions from the difference-in-differences analysis among 190 hospital employees
Outcomes | Model 1 | Model 2 | Model 3 | Model 4 |
|---|---|---|---|---|
Planetary Health Diet Index (0–42 score points) | ||||
n | 190 | 190 | 187 | 190* |
Means at baseline | ||||
Control (a) | 24·74 | 23·81 | 22·16 | 24·72 |
Intervention (b) | 25·10 | 24·07 | 22·62 | 25·11 |
Means at follow-up | ||||
Control (c) | 24·68 | 23·11 | 22·80 | 24·72 |
Intervention (d) | 25·65 | 23·94 | 23·80 | 25·68 |
Difference in intervention e = (d-b) | 0·55 | -0·13 | 1·18 | 0·57 |
Difference in control f = (c-a) | -0·06 | -0·69 | 0·64 | 0·01 |
Difference-in-differences | 0·62 | 0·56 | 0·54 | 0·56 |
95% confidence interval | -0·35, 1·58 | -0·41, 1·52 | -0·51, 1·59 | -0·41, 1·54 |
p-value | 0·21 | 0·26 | 0·31 | 0·25 |
Greenhouse gas emissions (kg CO2e/day) | ||||
n | 180 | 177 | 180* | |
Means at baseline | - | |||
Control (a) | 3·32 | - | 3·59 | 3·32 |
Intervention (b) | 3·29 | - | 3·60 | 3·29 |
Means at follow-up | - | |||
Control (c) | 3·37 | - | 3·58 | 3·37 |
Intervention (d) | 3·31 | - | 3·52 | 3·31 |
Difference in intervention e = (d-b) | 0·02 | - | -0·08 | 0·01 |
Difference in control f = (c-a) | 0·05 | - | -0·01 | 0·05 |
Difference-in-differences | -0·03 | - | -0·07 | -0·03 |
95% confidence interval | -0·16, 0·10 | - | -0·22, 0·08 | -0·16, 0·10 |
p-value | 0·64 | - | 0·34 | 0·64 |