Table 2.
Characteristic | Yes (n=1,248) | No (n=1,492) | OR (95% CI) |
---|---|---|---|
| |||
n (%) | n (%) | ||
Age (years)*** | |||
≤21 | 185 (41.29) | 263 (58.71) | 1.00 (reference) |
22–35 | 542 (43.29) | 710 (56.71) | 1.09 (0.87–1.35) |
36–50 | 300 (50.59) | 293 (49.41) | 1.46 (1.14–1.86) |
51–65 | 190 (53.52) | 165 (46.48) | 1.64 (1.24–2.17) |
>65 | 16 (31.37) | 35 (68.63) | 0.65 (0.35–1.21) |
Missing | 15 | 60 | |
Gender* | |||
Male | 661 (43.63) | 854 (56.37) | 1.00 (reference) |
Female | 581 (48.30) | 622 (51.70) | 1.21 (1.04–1.40) |
Missing | 6 | 50 | |
Race/ethnicity | |||
Caucasian | 1,064 (45.65) | 1,267 (54.35) | 1.00 (reference) |
Black/AfricanAmerican/Hispanic | 64 (44.44) | 80 (55.56) | 0.95 (0.68–1.34) |
Native American/Asian/Pacific | 45 (56.96) | 34 (43.04) | 1.58 (1.00–2.48) |
Islander | |||
Other | 65 (42.48) | 88 (57.52) | 0.88 (0.63–1.22) |
Missing | 10 | 57 | |
Geography | |||
US | 1,002 (45.50) | 1,200 (54.50) | 1.00 (reference) |
Canada | 55 (50.00) | 55 (50.00) | 1.20 (0.82–1.76) |
Europe | 116 (43.77) | 149 (56.23) | 0.93 (0.72–1.21) |
Other | 40 (50.00) | 40 (50.00) | 1.20 (0.77–1.87) |
Missing | 35 | 82 | |
Type of user | |||
Non-medical | 269 (24.43) | 832 (75.57) | 1.00 (reference) |
Medical | 979 (59.73) | 660 (40.27) | 4.59 (3.87–5.43) |
Missing | 0 | 0 |
Notes: p-values for the above comparisons were the result of chi-square analyses.
p<0.05
p<0.001.
Abbreviations: OR, odds ratio; CI, confidence interval.