Table 5 The interrupted time series analysis for the ratio of poisoning due to drugs, opioids, stimulants, and cannabis.

Variable	Coefficient	Standard error	p-value	95% CI
Drugs
Constant	30.022	1.34	< 0.001	27.321 to 32.723
Slope before	− 0.034	0.087	0.698	− 0.209 to 0.141
Level change	− 0.869	2.571	0.737	− 6.051 to 4.312
Slope change	0.263	0.158	0.103	− 0.056 to 0.581
Slope after	0.229	0.132	0.09	− 0.037 to 0.494
Opioids
Constant	43.963	2.07	< 0.001	39.792 to 48.135
Slope before	− 0.217	0.143	0.137	− 0.505 to 0.072
Level change	− 8.756	2.545	0.001	− 13.886 to − 3.628
Slope change	0.365	0.182	0.063	− 0.021 to 0.752
Slope after	0.148	0.125	0.24	− 0.103 to 0.4
Stimulants
Constant	4.313	0.867	< 0.001	2.565 to 6.061
Slope before	0.1	0.055	0.073	− 0.01 to 0.211
Level change	− 1.686	0.912	0.071	− 3.526 to 0.153
Slope change	− 0.114	0.072	0.121	− 0.259 to 0.031
Slope after	− 0.013	0.047	0.776	− 0.108 to 0.081
Cannabis
Constant	2.116	0.746	0.007	0.613 to 3.619
Slope before	0.195	0.059	0.002	0.0766 to 0.314
Level change	− 2.685	1.374	0.057	− 5.454 to 0.084
Slope change	− 0.253	0.089	0.007	− 0.431 to − 0.073
Slope after	− 0.057	0.067	0.394	− 0.192 to 0.077

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