Table 1.

Patient demographics

Demographic Characteristics	Nonsmokers (n = 470)	Smokers (n = 39)	P Value
Age at treatment (y)	46.98 ± 11.99	47.58 ± 9.97	.7632
Body mass index (kg/m2)	29.81 ± 6.31	30.09 ± 5.63	.8283
Sex			.1587
Male	186	20
Female	282	19
Race/ethnicity			.2179
Hispanic	22	4
Non-Hispanic white	348	30
Non-Hispanic Black	18	2
Other	82	3
Diabetes			.7477
No	449	37
Yes	19	2
Worker’s compensation			<.0001
No	452	32
Yes	14	7

Data are mean ± standard deviation or n (%).