From: Preferences for different features of ENDS products by tobacco product use: a latent class analysis
 | Total N = 636 | Class 1 n = 169 | Class 2 n = 159 | Class 3 n = 147 | Class 4 n = 161 | p value |
---|---|---|---|---|---|---|
 | n (%) or M ± SD | n (%) or M ± SD | n (%) or M ± SD | n (%) or M ± SD | n (%) or M ± SD |  |
Gender | Â | 3, 4 | 3 | 1 | 1 | Â |
 Male | 325 (51.1) | 101 (59.8) | 95 (59.7) | 70 (47.6) | 59 (36.6) |  |
 Female | 311 (48.9) | 68 (40.2) | 64 (40.3) | 77 (52.4) | 102 (63.4) |  |
Age | Â | 4 | 4 | 4 | 1, 2, 3 | Â |
in years | 42.2 ± 19.4 | 45.5 ± 19.64 | 44.6 ± 20.34 | 46.2 ± 20.04 | 32.6 ± 13.6 |  |
Age category | Â | 4 | . | 4 | 1, 3 | Â |
 18–24 | 159 (25.0) | 32 (18.9) | 44 (27.7) | 30 (20.4) | 53 (32.9) |  |
 25–34 | 150 (23.6) | 37 (21.9) | 25 (15.7) | 29 (19.7) | 59 (36.6) |  |
 35–44 | 59 (9.3) | 19 (11.2) | 10 (6.3) | 10 (6.8) | 20 (12.4) |  |
 45–54 | 46 (7.2) | 9 (5.3) | 15 (9.4) | 13 (8.8) | 9 (5.6) |  |
 55–64 | 57 (9.0) | 21 (12.4) | 12 (7.5) | 15 (10.2) | 9 (5.6) |  |
 65+ | 165 (25.9) | 51 (30.2) | 53 (33.3) | 50 (34.0) | 11 (6.8) |  |
Race | Â | 2, 4 | 1 | 4 | 1, 3 | Â |
 White | 515 (81.0) | 156 (92.3) | 123 (77.4) | 121 (82.3) | 115 (71.4) |  |
 Black or African American | 41 (6.4) | 5 (3.0) | 15 (9.4) | 8 (5.4) | 13 (8.1) |  |
 Asian | 38 (6.0) | 3 (1.8) | 8 (5.0) | 5 (3.4) | 22 (13.7) |  |
 Other racial group | 42 (6.6) | 5 (3.0) | 13 (8.2) | 13 (8.8) | 11 (6.8) |  |
Hispanic/Latino | Â | 4 | . | 4 | 1, 3 | <.001 |
 No | 548 (86.2) | 158 (93.5) | 139 (87.4) | 131 (89.1) | 120 (74.5) |  |
 Yes | 88 (13.8) | 11 (6.5) | 20 (12.6) | 16 (10.9) | 41 (25.5) |  |
Education | Â | . | . | . | . | .14 |
 0 = < High school (HS) … 4 = Master’s degree | 2.19 ± 0.99 | 2.27 ± 0.90 | 2.14 ± 0.95 | 2.05 ± 0.99 | 2.27 ± 1.09 |  |
Education category | Â | . | . | . | . | .16 |
 < High school (HS) | 16 (2.5) | 2 (1.2) | 3 (1.9) | 5 (3.4) | 6 (3.7) |  |
 HS diploma or GED | 148 (23.3) | 30 (17.8) | 39 (24.5) | 42 (28.6) | 37 (23.0) |  |
 Associate degree or Some college | 234 (36.8) | 72 (42.6) | 62 (39.0) | 51 (34.7) | 49 (30.4) |  |
 Bachelor’s degree | 175 (27.5) | 50 (29.6) | 42 (26.4) | 38 (25.9) | 45 (28.0) |  |
 Master’s degree | 63 (9.9) | 15 (8.9) | 13 (8.2) | 11 (7.5) | 24 (14.9) |  |
 Household income | 3.12 ± 1.85 | 3.19 ± 1.87 | 3.09 ± 1.82 | 2.91 ± 1.88 | 3.25 ± 1.83 |  |
 $0 to $29,999 per year | 142 (22.3) | 35 (20.7) | 34 (21.4) | 39 (26.5) | 34 (21.1) |  |
 $30,000 to $59,999 per year | 239 (37.6) | 65 (38.4) | 65 (40.9) | 52 (35.4) | 57 (35.4) |  |
 $60,000 or more per year | 255 (40.1) | 69 (40.9) | 60 (37.7) | 56 (38.1) | 70(43.5) |  |
General health | Â | 4 | 4 | 4 | 1, 2, 3 | <.001 |
0 = Poor … 4 = Excellent | 2.70 ± 0.96 | 2.53 ± 0.974 | 2.60 ± 0.954 | 2.62 ± 0.944 | 3.04 ± 0.92 |  |