Table 4.

Multivariate analysis of variables associated with tic severity

	Odds ratio (95% CI)	P value
Gender	0.67 (0.24–1.88)	0.45
Age at symptom onset	0.09 (0–1,059,041.33)	0.77
Age at diagnosis	11.79 (0–131,775,769.7)	0.76
Time interval between symptom onset and diagnosis	0.81 (0.21–3.16)	0.77
Subtypes of tic disorder
Provisional tic disorder	1	0.37
Chronic motor or vocal tic disorder	1.43 (0.39–5.21)	0.58
Tourette syndrome	0.38 (0.04–3.37)	0.39
Initial tic symptoms
Motor tics	1	0.77
Vocal tics	1.47 (0.26–8.13)	0.65
Motor + vocal tics	1.42 (0.50–3.97)	0.50
Presence of neuropsychiatric comorbidities	1.43 (0.58–3.52)	0.43