TABLE 6.

Results of the multinomial logistic regression model for people taking two or more psychotropic drugs

Taking two or more psychotropic drugs (polypharmacy)
Age	−0.036 (0.014)	7.124	1	0.008*	0.939	0.964	0.990
Gender
Female (reference)
Male	0.212 (0.191)	1.233	1	0.267	0.850	1.237	1.800
Severity of intellectual disability
Mild	0.689 (0.273)	6.372	1	0.012*	1.166	1.991	3.399
Moderate	0.272 (0.238)	1.312	1	0.252	0.824	1.313	2.092
Severe/profound (reference)
Living environment
Residential setting	1.015 (0.205)	24.580	1	0.000*	1.847	2.759	4.120
Community setting (reference)
Communication type
None	−1.596 (1.219)	1.713	1	0.191	0.019	0.203	2.212
Verbal	−0.026 (0.316)	.007	1	0.935	0.552	1.026	1.906
Non‐verbal (reference)
Mental health conditions
No (reference)
Yes	−3.310 (0.266)	154.756	1	0.000*	0.022	0.037	0.062
Behavioural problem
No (reference)
Yes	−0.822 (0.216)	14.542	1	0.000*	0.288	0.439	0.671

Note: R ² = 0.38 (Cox & Snell); 0.45 (Nagelkerke). Model χ ²(18, 991) = 469.80; p < .001.

^*Significant differences p < .05.