Table 4.
Prevalencea and adjusted prevalence ratio of smoking quit ratiob among 161,233 US adults who smoke, 2018 BRFSS
| Quit ratiob, % (95% CI) | Adjusted prevalence ratio (95% CI)c | ||
|---|---|---|---|
| Characteristic | COPD | Non-COPD | |
| Crude prevalence | 52.3 (51.0–53.6) | 61.9 (61.4–62.5) | |
| Age-adjusted prevalence | 53.2 (51.7–54.6) | 63.9 (63.3–64.4) | 0.81 (0.78–0.84) ** |
| Sex a | |||
| Men | 55.8 (53.8–57.9) | 64.6 (63.8–65.4) | 0.83 (0.79–0.87) ** |
| Women | 50.9 (48.9–52.8) | 62.8 (61.9–63.7) | 0.80 (0.77–0.84) ** |
| Age group (years) | |||
| 18–44 | 31.3 (27.7–35.1) | 48.7 (47.7–49.6) | 0.84 (0.75–0.94) * |
| 45–64 | 41.2 (39.2–43.2) | 62.3 (61.3–63.2) | 0.79 (0.75–0.83) ** |
| 65–74 | 64.7 (62.4–67.0) | 80.0 (79.0–81.0) | 0.87 (0.84–0.90) ** |
| ≥75 | 81.6 (79.2–83.8) | 90.8 (89.9–91.7) | 0.91 (0.89–0.94) * |
| Race/ethnicity a | |||
| Non-Hispanic White | 52.9 (51.4–54.4) | 66.0 (65.4–66.6) | 0.80 (0.78–0.83) ** |
| Non-Hispanic Black | 49.0 (43.7–54.2) | 48.5 (46.5–50.4) | 0.92 (0.80–1.05) |
| Hispanic | 64.6 (57.6–71.5) | 64.7 (62.4–67.1) | 0.97 (0.84–1.12) |
| American Indian/Alaska Native | 40.6 (31.0–50.1) | 52.0 (47.0–57.0) | 0.83 (0.61–1.12) |
| Asian | 66.9 (50.7–83.0) | 67.8 (63.4–72.2) | 0.84 (0.56–1.28) |
| Other, Non-Hispanic | 51.7 (43.5–60.0) | 55.7 (52.9–58.6) | 0.92 (0.76–1.12) |
| Education a | |||
| Less than high school diploma | 41.6 (38.4–44.8) | 49.5 (47.4–51.6) | 0.81 (0.73–0.90) ** |
| High school diploma or GED | 53.0 (50.7–55.3) | 58.9 (57.9–60.0) | 0.81 (0.76–0.85) ** |
| Some college or technical school | 57.6 (55.2–59.9) | 64.9 (63.9–65.9) | 0.82 (0.78–0.87) ** |
| College graduate | 66.0 (62.5–69.5) | 78.7 (77.8–79.5) | 0.83 (0.78–0.88) ** |
| Employment status a | |||
| Employed | 56.1 (53.2–59.0) | 66.6 (65.7–67.4) | 0.78 (0.73–0.83) ** |
| Unemployed | 39.5 (33.1–45.9) | 48.0 (45.4–50.6) | 0.68 (0.55–0.85) ** |
| Retired | 57.0 (54.4–59.6) | 66.5 (64.7–68.2) | 0.87 (0.85–0.89) ** |
| Unable to work | 48.3 (45.4–51.1) | 48.1 (46.1–50.0) | 0.85 (0.78–0.92) * |
| Homemaker or student | 51.8 (43.7–59.8) | 62.8 (60.3–65.3) | 0.80 (0.65–0.97) * |
| Federal poverty level (FPL) a | |||
| ≤125% FPL | 43.2 (40.8–45.5) | 49.9 (48.3–51.4) | 0.78 (0.72–0.85) ** |
| 126%–199% FPL | 53.0 (49.9–56.1) | 56.2 (54.6–57.7) | 0.82 (0.76–0.89) ** |
| 200%–399% FPL | 58.7 (55.6–61.8) | 64.5 (63.2–65.7) | 0.81 (0.76–0.86) ** |
| ≥400% FPL | 69.5 (65.9–73.1) | 76.7 (75.8–77.6) | 0.82 (0.76–0.88) ** |
| Missing | 52.0 (48.2–55.8) | 59.1 (57.3–60.8) | 0.84 (0.77–0.92) * |
| NCHS urban-rural county scheme classification a | |||
| Large central metropolitan | 56.0 (52.3–59.6) | 65.6 (64.3–67.0) | 0.83 (0.77–0.90) ** |
| Large fringe metropolitan | 57.7 (54.4–61.1) | 66.9 (65.7–68.1) | 0.85 (0.79–0.91) * |
| Medium metropolitan | 53.6 (50.9–56.3) | 63.7 (62.6–64.9) | 0.80 (0.75–0.86) ** |
| Small metropolitan | 50.8 (47.3–54.2) | 61.4 (60.0–62.9) | 0.81 (0.74–0.89) ** |
| Micropolitan | 44.5 (41.4–47.5) | 59.4 (58.0–60.7) | 0.73 (0.67–0.79) ** |
| Noncore (rural) | 49.3 (45.8–52.8) | 56.5 (54.9–58.2) | 0.80 (0.73–0.88) ** |
| Leisure-time physical activity a | |||
| Yes | 57.1 (55.2–59.0) | 67.3 (66.7–67.9) | 0.81 (0.77–0.84) ** |
| No | 48.6 (46.5–50.7) | 54.0 (52.7–55.3) | 0.82 (0.77–0.87) ** |
| Asthma status a | |||
| Current asthma | 55.4 (53.0–57.8) | 60.8 (58.7–62.9) | 0.83 (0.77–0.89) ** |
| Former asthma | 57.1 (51.1–63.1) | 66.6 (64.0–69.2) | 0.74 (0.63–0.88) ** |
| No | 51.5 (49.7–53.4) | 63.9 (63.3–64.6) | 0.80 (0.77–0.83) ** |
| Body mass index (BMI, kg/m2) a | |||
| Underweight (<18.5) | 35.4 (28.1–42.7) | 42.1 (37.8–46.4) | 0.87 (0.67–1.13) |
| Normal weight (18.5–24.9) | 42.3 (39.6–45.0) | 58.3 (57.2–59.3) | 0.76 (0.70–0.81) ** |
| Overweight (25.0–29.9) | 54.0 (51.4–56.7) | 65.8 (64.9–66.8) | 0.83 (0.78–0.87) ** |
| Obese (≥30.0) | 61.8 (59.6–63.9) | 67.8 (66.8–68.8) | 0.84 (0.80–0.88) ** |
| Depression a | |||
| Yes | 50.0 (47.7–52.2) | 56.6 (55.5–57.8) | 0.81 (0.76–0.87) ** |
| No | 55.3 (53.4–57.1) | 65.9 (65.2–66.5) | 0.80 (0.77–0.83) ** |
Abbreviations: BRFSS, Behavioral Risk Factor Factors Surveillance System; COPD, chronic obstructive pulmonary disease; CI, confidence interval; GED, General Educational Development; NCHS, National Center for Health Statistics.
a
Age-adjusted prevalence and 95% CI were derived from a logistic regression model including age.
b
Quit ratio was defined as the percentage of ever smokers who had quit smoking (former smokers divided by ever smokers).
c
Adjusted prevalence ratio and 95% CI were derived from a logistic regression model including all other selected characteristics.
*
P<0.05,
**
P<0.01; otherwise p>0.05.