Table 2.

Sociodemographic and disease characteristics of the study population.

Sociodemographic and disease characteristics	Results
Gender*
Male	35 (72.9%)
Female	13 (27.1%)
Age, years**	63 (40–76)
Smoking***	37.7±22
History of tuberculosis*
Not present	38 (85.4%)
Present	7 (14.6%)
Type of cancer*
Squamous carcinoma	24 (50%)
Adenocarcinoma	19 (39.6%)
Others	5 (10.4%)
Location of Cancer*
Upper lobe	23 (47.9%)
Middle lobe	5 (10.4%)
Lower lobe	20 (41.7%)
Cancer stage*
Stage 1	23 (47.9%)
Stage 2	17 (35.4%)
Stage 3	8 (16.7%)
Type of surgery*
Sub-lobar resection	34 (70.8%)
Lobectomy	11 (22.9%)
Pneumonectomy	3 (6.3%)

^*Values expressed as n (%);

^**Values expressed as median (range);

^***Values expressed as pack years mean±standard deviation.