Table 3. Characteristics of participants with pulmonary cyst stratified with smoking status.
| Non smoker (N=80) | Former and current smoker (N=120) | *1 P value | |
|---|---|---|---|
|
| |||
| Age — year | 61.9 ± 12.6 (range 40.1, 89.8) |
63.7 ± 61.9 (range 41, 88.9) |
0.3 |
|
| |||
| Female sex — no. (%) | 37 (46) | 59 (49) | 0.7 |
|
| |||
| Body-mass index*2 | 26.8 ± 4.2 | 27.3 ± 5.0 | 0.5 |
|
| |||
| Emphysema — no. (%) | 1 (1) | 24 (20) | 0.002 |
|
| |||
| Cyst size (diameter) — mm | 11.2 ± 6.1 (range 4.0, 34.3) |
10.3 ± 4.5 (range 4.0, 30.3) |
0.2 |
|
| |||
| Interval change in diameter — no. (%) | |||
| Increased | 15 (38) | 24 (35) | 0.7 |
| Unchanged | 23 (58) | 45 (65) | 0.4 |
| Decreased | 2 (5) (N=40) |
0 (0) (N=69) |
- |
|
| |||
| Coronary artery calcium score*3 | 158.1 ± 331.1 (N=77) |
174.7 ± 355.1 (N=111) |
0.98 |
Plus-minus values are mean ± standard deviation.
*1
P values for BMI, emphysema, cyst size, interval change, and coronary artery calcium score were adjusted for age and sex. In addition, the result for coronary artery calcium score was adjusted for the presence of emphysema.
*2
The body-mass index is the weight in kilograms divided by square of the height in meters.
*3
Coronary artery calcium scores were calculated by the Agatston method [27].