Table 2
Effect of the night travel ban on road fatalities in Zambia
| Period (n) | Preintervention annual average RTFs | Level change (ß2) Intervention year==2016 | Slope (trend) change (ß3) Intervention year==2016 | Overall impact | ||
| Estimated change in levels of RTFs | 95% CI | Estimated change of trends in RTFs | 95% CI | % change in RTC ( ) | ||
| 2006–2020 | 1124.7 | −424.8 | −1042.7 to 193.2 | −477.5*** | −816.3 to −138.6 | −57.5 |
| 2012–2020 | 1809.7 | −521.2** | −1002.8 to −39.5 | −608.7** | −1014.9 to −202.5 | −68.9 |
*ITSA model Newey-West SEs. Models includes time-varying covariates such as motor vehicle population and human population. ***Significant at below 1%, ** Significant at between 1% and 5%,** Significant at between 5% and 10%
ITSA, interrupted time series analysis; RTCs, road traffic crashes; RTFs, road traffic fatalities.