Covariate | False negatives (n = 59) | Rest population (n = 274) | p-value |
---|---|---|---|
Proportion / mean ± standard deviation | Proportion / mean ± standard deviation | ||
Age, years | 65.7 ± 12.7 | 64.1 ± 11.0 | 0.38 t |
COPD GOLD grade | mode: 2 | mode: 0 | 0.22 c |
Chest tube | 0.32 | 0.42 | 1 c |
Soft tissue emphysema | 0.12 | 0.14 | 1 c |
Ipsilateral pretreatment (surgery or irradiation) | 0.10 | 0.23 | 1 c |
Packyears | 33.8 ± 27.35 | 32.1 ± 26.9 | 0.66 t |
Thoracotomy | 0.42 | 0.52 | 1 c |
BMI, kg/m2 | 25.6 ± 4.6 | 26.9 ± 5.5 | 0.08 t |
Male gender | 0.54 | 0.55 | 1 c |
Supine X-ray | 0.68 | 0.57 | 1 c |