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Table 1 Parameter estimates for monthly RTA, injuries and deaths from 2015 to 2017 in the selected eight urban districts, Guinea from 2015 to 2017

From: Frequency, characteristics and hospital outcomes of road traffic accidents and their victims in Guinea: a three-year retrospective study from 2015 to 2017

  RTA Injuries Deaths
β 95% CI P β 95% CI P β 95% CI P
Rate of outcome in 2015 (β0) 1.39 (1.21; 1.57) <.001 .77 (.66; .88) <.001 .13 (.03; .27) .0460
Average monthly change in rate in 2015 (β1) −.06 (−.10; −.03) <.001 −.02 (−.03; −.00) .0470 .01 (−.02; .01) .3430
Change in rate from 2015 to 2016 and 2017 (β2) −.56 (.19;.93) .0040 .01 (−.21; .24) .9120 −.00 (−.07; .02) .9850
Difference between trend in outcome rate in 2016 and 2017 compared to 2015 (β3) .14 (.10; .19) <.001 .07 (.04; .09) <.001 .01 (−.01; .02) .2800
Overall trends
Linear Trend in 2015 Period (β1) −.06 (−.10; −.03) <.001 −.02 (−.03; −.00) .0470 .01 (−.02; .01) .3430
Linear Trend in 2016 and 2017 (β1 + β3) .07 (.05; .09) <.001 .05 (.03; .07) <.001 0 (−.00; .00) .3039