Table 1 Demographic and clinical characteristics of patients with and without smoking status recorded in their EMR
Variable | Smoking status recorded (N = 28,634) | Missing smoking status (N = 19,743) | p-value |
|---|---|---|---|
Female, n (%) | 14,547 (50.8) | 10,342 (52.4) | 0.001 |
Missing sex, n (%) | 1 (0.0) | 1 (0.0) | – |
Age in years, mean (SD) | 64.9 (13.4) | 65.3 (14.7) | 0.001 |
BMI in kg/m2, mean (SD) | 30.9 (6.8) | 30.7 (6.8) | 0.001 |
Missing BMI, n (%) | 1660 (5.8) | 3334 (16.9) | – |
Systolic BP, mean (SD) | 132.3 (16.2) | 133.4 (16.5) | < 0.001 |
Diastolic BP, mean (SD) | 78.9 (10.8) | 79.2 (10.7) | 0.027 |
Missing BP, n (%) | 84 (0.3) | 406 (2.0) | – |
COPD, n (%) | 3078 (10.7) | 1645 (8.3) | < 0.001 |
Diabetes, n (%) | 8040 (28.1) | 4920 (24.9) | < 0.001 |
Type of EMR system, n (%) | < 0.001 | ||
Wolf | 20,471 (71.5) | 5872 (29.7) | |
Med Access | 7481 (26.1) | 13,110 (66.4) | |
Practice Solutions Suite | 448 (1.6) | 14 (0.1) | |
Telin | 86 (0.3) | 251 (1.3) | |
Healthquest | 148 (0.5) | 496 (2.5) | |
Urban residence, n (%) | 20,373 (72.6) | 15,728 (81.1) | < 0.001 |
Missing postal code, n (%) | 558 (1.9) | 344 (1.7) | – |
Number of total clinical encounters, median (lower quartile, upper quartile) | 37.0 (20, 63) | 24.0 (12, 44) | < 0.001 |