TABLE 1.

Demographics of men exposed and not exposed to stimulants

Variable	Exposed (n = 106)	Non-exposed (n = 8,755)	p-value
Age (IQR)	34.00 (31.00 – 34.00)	35.0 (32.00 – 40.00)	0.002
Race/ethnicity (%)			<0.001
White	73 (68.9)	3,932 (44.9)
Black, non-Hispanic	2 (1.9)	389 (4.4)
Hispanic	3(2.8)	249 (2.8)
Other	11 (10.4)	1,715 (19.6)
Declined/unknown	17 (16.0)	2,470 (28.2)
Insurance status (%)			<0.001
Private only	102 (96.2)	6,824 (77.9)
Public or state-based only	0	86 (1.0)
Public/private combination	0	17 (0.2)
Self-pay	0	299 (3.4)
Other/unknown	4(3.8)	1,529 (17.5)
FSH (IQR)*	4.50 (3.31–6.51)	4.30 (3.00–6.50)	0.542
Testosterone (IQR)†	356(261–463)	327(260–418)	0.378
Non-stimulant medication use (%)	80 (75.5)	2,072 (23.7)	<0.001
Stimulant-type (%)‡
Amphetamines	92 (86.7)
Methylphenidate	18 (16.9)

Abbreviations: FSH, follicle-stimulating hormone; IQR, interquartile range.

^*FSH levels are summarized for 44 men exposed to stimulants and 2,021 men not exposed to stimulants.

^†Testosterone levels collected prior to 11 am are summarized for 33 men exposed to stimulants and 1,372 men not exposed to stimulants.

^‡The use of amphetamines and methylphenidate was not mutually exclusive and may occur at separate time points for a given patient.