≥ 5 Medications	≥ 10 Medications	≥ 15 Medications
	OR (95% CI)	OR (95% CI)	OR (95% CI)
CP only vs. without CP
Model 1	1.39 (1.30-1.49)	1.36 (1.26-1.47)	1.35 (1.23-1.49)
Model 1 + race	1.38 (1.29-1.48)	1.35 (1.26-1.46)	1.35 (1.22-1.49)
CP + NDDs vs. without CP
Model 1	2.52 (2.26-2.80)	2.23 (2.00-2.49)	1.59 (1.38-1.83)
Model 1 + race	2.50 (2.24-2.78)	2.22 (1.99-2.48)	1.58 (1.38-1.82)
CP + NDDs vs. CP only
Model 1	1.81 (1.60-2.06)	1.64 (1.43-1.87)	1.17 (0.99-1.39)
Model 1 + race	1.81 (1.59-2.06)	1.64 (1.43-1.87)	1.17 (0.99-1.39)

Note: Model 1: age (as continuous), sex, U.S. region of residence, and multimorbidity.

^a The without CP group served as the reference group.

CI = confidence interval; CP = cerebral palsy; NDD = neurodevelopmental disabilities; OR = odds ratio.