Table 1 Demographic and smoking history characteristics of quitline callers before and after the introduction of NRT | Pre-NRT (n = 18 070) | Post-NRT (n = 27 944) |
| No | % (95% CI) | No | % (95% CI) |
| Sex | | | | |
| Female | 10 779 | 59.7 (59.0 to 60.4) | 16 180 | 57.9 (57.3 to 58.5) |
| Male | 7291 | 40.3 (39.6 to 41.0) | 11 764 | 42.1 (41.5 to 42.7) |
| Age | | | | |
| Under 15 | 60 | 0.3 (0.22 to 0.38) | 19 | 0 (−0.03 to 0.03) |
| 15–17 | 116 | 0.6 (0.5 to 0.7) | 94 | 0.3 (0.23 to 0.37) |
| 18–24 | 1997 | 11.1 (10.6 to 11.6) | 2263 | 8.1 (7.8 to 8.4) |
| 25–34 | 3542 | 19.6 (19.1 to 20.1) | 5573 | 20 (19.5 to 20.5) |
| 35–44 | 4193 | 23.2 (22.6 to 23.8) | 7336 | 26.3 (25.8 to 26.8) |
| 45–54 | 4656 | 25.8 (25.2 to 26.4) | 7544 | 27 (26.5 to 27.5) |
| 55 and over | 3506 | 19.4 (18.8 to 20.0) | 4983 | 17.8 (17.4 to 18.2) |
| Race/ethnicity | | | | |
| White | 11 436 | 73.4 (72.7 to 74.1) | 21 956 | 84.8 (84.4 to 85.2) |
| African American | 3596 | 23.1 (22.4 to 23.8) | 3123 | 12.1 (11.7 to 12.5) |
| Latino | 148 | 0.9 (0.7 to 1.1) | 114 | 0.4 (0.3 to 0.5) |
| Other | 400 | 2.6 (2.4 to 2.8) | 708 | 2.7 (2.5 to 2.9) |
| Education | | | | |
| Not high school graduate | 2607 | 16.6 (16.0 to 17.2) | 3102 | 11.5 (11.1 to 11.9) |
| High school graduate | 5916 | 37.6 (36.8 to 38.4) | 10 465 | 38.8 (38.2 to 39.4) |
| Some college | 4993 | 31.8 (31.1 to 32.5) | 8351 | 30.9 (30.3 to 31.5) |
| College graduate | 1828 | 11.6 (11.1 to 12.1) | 4329 | 16.0 (15.6 to 16.4) |
| Graduate school | 378 | 2.4 (2.2 to 2.6) | 754 | 2.8 (2.6 to 3.0) |
| Cigarettes per day | | | | |
| <10 | 949 | 6.2 (5.8 to 6.6) | 1017 | 3.9 (3.7 to 4.1) |
| 10 | 3799 | 24.9 (24.2 to 25.6) | 6234 | 23.7 (23.2 to 24.2) |
| 20 | 5953 | 39 (38.2 to 39.8) | 11 154 | 42.4 (41.8 to 43.0) |
| 30 | 2132 | 14 (13.4 to 14.6) | 4151 | 15.7 (15.3 to 16.1) |
| 40 | 1742 | 11.4 (10.9 to 11.9) | 2840 | 10.8 (10.4 to 11.2) |
| >40 | 691 | 4.5 (4.2 to 4.8) | 937 | 3.6 (3.4 to 3.8) |