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. 2025 Aug 25;9:e76019. doi: 10.2196/76019

Table 1. Sociodemographic characteristics of the study participants.

Sociodemographic characteristics Exclusive cigarette smokers (n=353) Dual users (n=367)
Age (years), mean (SD) 47 (10.4) 44.3 (9.6)
Age category (years), n (%)
 21‐24 6 (1.7) 5 (1.4)
 25‐34 39 (11) 58 (15.8)
 35‐44 100 (28.3) 122 (33.2)
 45‐64 208 (58.9) 182 (49.6)
Sex, n (%)
 Male 126 (35.7) 181 (49.3)
 Female 227 (64.3) 186 (50.7)
Ethnicity, n (%)
 Hispanic or Latino 54 (15.3) 37 (10.1)
 Not Hispanic or Latino 299 (84.7) 330 (89.9)
 Prefer not to answer 0 (0) 0 (0)
Race, n (%)
 White 226 (64) 228 (62.1)
 Black 107 (30.3) 111 (30.2)
 Another or multiple races 20 (5.7) 28 (7.6)
 Prefer not to answer 0 (0) 0 (0)
Level of education, n (%)a
 Less than college graduate 242 (68.6) 197 (53.7)
 College graduate or higher 111 (31.4) 170 (46.3)
 Prefer not to answer 0 (0) 0 (0)
Annual household income, n (%)b
 Less than $75,000 217 (61.5) 205 (55.9)
 $75,000 or higher 135 (38.2) 159 (43.3)
 Prefer not to answer 0 (0) 2 (0.5)
 Don’t know 1 (0.3) 1 (0.3)
a

Level of education was based on the following response options: less than college graduate (less than high school; some high school or general education diploma; high school graduate; some college), college graduate or higher (college graduate; advanced degree), and prefer not to answer.

b

Annual household income was based on the following response options: less than US $75,000 (less than US $10,000; US $10,000 to $29,999; US $30,000 to $44,999; US $45,000 to $59,999; US $60,000 to $74,999), US $75,000 or higher (US $75,000 to $99,999; US $100,000 to $149,999; US $150,000 or higher), prefer not to answer, and don’t know.