Store factors and work practices by intervention group and visit
| No intervention | Intervention | |||||
|---|---|---|---|---|---|---|
| Visit 1 | Visit 2 | p* | Visit 1 | Visit 2 | p* | |
| *Comparing visit 1 to visit 2, χ2 analysis. | ||||||
| Number of stores | 19 | 19 | 17 | 17 | ||
| Glass breaking machine in use | ||||||
| Rotary type | 74% | 74% | 65% | 0 | ||
| Glass aggregate type | 26% | 26% | 35% | 0 | ||
| Raking today (% yes) | 74% | 63% | 0.5 | 59% | 0 | |
| Machine jams cleared today (% yes) | 26% | 5% | 0.07 | 0 | 0 | |
| Visibly contaminated bottles in breaker, or broken manually (% yes) | 73% | 46% | 0.09 | 63% | 7% | <0.001 |
| Full glass bins stored overnight (% yes) | 5% | 16% | 0.3 | 12% | 71% | 0.005 |
| Glass bins covered (% yes) | 100% | 95% | 0.3 | 100% | 6% | <0.001 |
| Local exhaust (% yes) | 0.4 | <0.001 | ||||
| On all day | 32% | 53% | 0.4 | 35% | 6% | <0.001 |
| On during/after breaking | 63% | 42% | 59% | 0 | ||
| Used rarely or never | 5% | 5% | 6% | 94% | ||