Table 5.

Factors of dementia subgroup stratified by amphetamine‐related disorders by using Fine and Gray’s competing risk model

Amphetamine‐related disorders	Dementia types	Events	Adjusted HR	95% CI	95% CI	P
Amphetamine use disorder (reference: without)	Overall	200	3.189	2.971	3.419	<0.001
Amphetamine use disorder (reference: without)	AD	9	3.172	2.955	3.401	<0.001
Amphetamine use disorder (reference: without)	VaD	10	2.207	2.061	2.375	<0.001
Amphetamine use disorder (reference: without)	Other dementia	181	3.259	3.029	3.514	<0.001
Amphetamine‐induced psychotic disorder (reference: without)	Overall	1,551	5.440	5.072	5.821	<0.001
Amphetamine‐induced psychotic disorder (reference: without)	AD	52	4.036	3.765	4.333	<0.001
Amphetamine‐induced psychotic disorder (reference: without)	VaD	53	2.574	2.404	2.779	<0.001
Amphetamine‐induced psychotic disorder (reference: without)	Other dementia	1,446	5.740	5.352	6.180	<0.001

PYs, Person‐years; Adjusted HR, Adjusted Hazard ratio, Adjusted for the variables listed in Table 1.; CI, confidence interval.