Table 1 Characteristics of all participants.
Variable | Frequency (N = 260) | Percentage (%) | Mean (SD) | Range | |
|---|---|---|---|---|---|
Age (years) | ≤ 44 | 43 | 16.54 | ||
45 ~ 64 | 150 | 57.69 | |||
≥ 65 | 67 | 25.77 | |||
Gender | Male | 88 | 33.85 | ||
Female | 172 | 66.15 | |||
Smoking history | Yes | 36 | 13.85 | ||
No | 224 | 86.15 | |||
History of occupational exposure | Yes | 15 | 5.77 | ||
No | 245 | 94.23 | |||
Family history of malignant tumour | Yes | 95 | 36.54 | ||
No | 165 | 63.46 | |||
The number of PNs | Single | 42 | 16.15 | ||
Multiple | 218 | 83.85 | |||
The size of PNs | <8 mm | 149 | 57.31 | ||
≥ 8 mm | 111 | 42.69 | |||
Malignant signs | Yes | 34 | 13.08 | ||
No | 226 | 86.92 | |||
Classification of hazard levels | Low risk | 37 | 14.23 | ||
Medium risk | 180 | 69.23 | |||
High risk | 43 | 16.54 | |||
BMI | 24.17(2.95) | 16.22–33.87 | |||
Cough | Yes | 98 | 37.69 | ||
No | 162 | 62.31 | |||
Chest tightness | Yes | 85 | 32.69 | ||
No | 175 | 67.31 | |||
Shortness of breath | Yes | 110 | 42.31 | ||
No | 150 | 57.69 | |||
Insomnia | Yes | 132 | 50.77 | ||
No | 128 | 49.23 | |||
Palpitation | Yes | 92 | 35.38 | ||
No | 168 | 64.62 | |||
Loss of appetite | Yes | 41 | 15.77 | ||
No | 219 | 84.23 | |||
