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Table 1 Characteristics of the study population (n = 342)

From: Diagnostic value of medical thoracoscopy in malignant pleural effusion

Variables Values
Age, yr., mean ± SD 62.8 ± 9.7
Sex, male/female, n (%) 183/159 (53.5/46.5)
Smoking status, n (%)
 Current or previous smoker 127 (37.1)
 Non-smoker 149 (43.6)
 Not clear 66 (19.3)
History of malignancy 32 (9.4)
CT imaging
 Mediastinal and hilum lymphadenopathy 196 (57.3)
 Pleural thickening 159 (46.5)
 Pulmonary consolidation or infiltration 158 (46.2)
 Pulmonary mass or nodules 134 (39.2)
 Pulmonary atelectasis 126 (36.8)
 Pleural nodularity 51 (14.9)
Side of effusion, n (%)
 Right 149 (43.6)
 Left 133 (38.9)
 Bilateral 60 (17.5)
Size of effusion, n (%)
 Small 57 (16.7)
 Moderate 44 (12.9)
 Large 241 (70.4)
Effusion appearance, n (%)
 Blood- tinged 191 (55.9)
 Yellow 151 (44.1)