Comorbidities in ADHD children treated with methylphenidate: a database study

BMC Psychiatry

Table 3 Selected physical comorbidities in incident methylphenidate users and controls in 2005 to 2006

	Male			Female
Diagnostic Group	Incident users	Controls	P-value	Incident users	Controls	P-value
Diagnostic Group	(N=13,460)%¹	(N=978,790)%¹	P-value	(N=3,837)%¹	(N=1,000,300)%¹	P-value
Pre-existing cardiovascular disorders	2.00	1.24	<0.01	2.06	1.18	<0.01
Angina pectoris	0.13	0.19	0.34	0.16	0.18	0.90
Arterial occlusive disease	0.01	0.02	0.98	0.08	0.03	0.04
Potentially life threatening arrhythmias	0.51	0.17	<0.01	0.57	0.14	<0.01
Cardiomyopathy	0.10	0.05	0.02	0.03	0.05	0.57
Severe congenital heart disease	1.23	0.78	<0.01	1.20	0.75	<0.01
Heart failure	0.09	0.05	0.02	0.03	0.05	0.69
Myocardial infarction	0.01	0.01	0.64	0.03	0.02	0.43
Severe hypertension	0.07	0.05	0.34	0.05	0.05	0.82
Pre-existing cerebrovascular disorders	0.19	0.11	<0.01	0.13	0.10	0.36
Stroke	0.10	0.05	0.02	0.10	0.04	0.02
Glaucoma	0.39	0.33	0.34	0.34	0.35	0.96
Hyperthyroidism	1.22	0.15	<0.01	0.89	0.27	<0.01

¹ Percentages could add up to more than 100% since insurees could have more than one type of comorbidity.

ISSN: 1471-244X