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. 2016 Aug 5;26(8):433–439. doi: 10.2188/jea.JE20140103

Table 3. Mean percentage change and slope coefficients of standardized daily and monthly counts of road-traffic injuries, alcoholism, and non-traffic injuries before and after intervention in Guangzhou, China.

  Daily counts Monthly counts
% change
(95% CI)		 Pre-slope
(%, P value)		 Post-slope
(%, P value)		 % change
(95% CI)		 Pre-slope
(%, P value)		 Post-slope
(%, P value)
Road-traffic injuriesa −9.6
(−12.8, −6.5)		 −0.002
(0.325)		 −0.006
(0.004)		 −11.9
(−19.7, −4.0)		 −0.13
(0.67)		 −0.36
(0.03)
Alcoholismb 38.8
(35.1, 42.4)		 0.060
(<0.001)		 0.057
(<0.001)		 40.1
(28.4, 51.8)		 1.79
(<0.001)		 1.71
(<0.001)
Non-traffic injuriesb 3.6
(1.4, 5.8)		 0.009
(0.003)		 0.006
(<0.001)		 2.8
(−3.5, 9.1)		 0.32
(0.22)		 0.21
(0.10)

CI, confidence interval.

aRoad-traffic-related injuries were standardized as a unit of 1 million population and 1 million vehicles.

bAlcoholism and non-traffic-related injuries were standardized as a unit of 1 million population. These estimates were obtained from the generalized additive model described in the “Statistical analysis” section.