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Table 1 Patient characteristics

From: Use of a sealant to prevent prolonged air leaks after lung resection: a prospective randomized study

Variable Control group (N = 111) Sealant group (N = 111) p-value
Age (years) 67.5 65.3 0.1
FEV1 (%) 78.3 82.7 0.4
ppoFEV1 (%) 62.5 65.4 0.2
paO2 (mmHg) 82.1 80.3 0.3
paCO2 (mmHg) 39.2 38.6 0.5
Pack years* 48.0 46.7 0.05
Side (% right) 57.4 56.6 0.7a
Site (% upper lobes) 78.1 73.2 0.05a
Pleural adhesions (%) 43.2 40.5 0.1a
Stapler suture length (cm) 62.9 64.8 0.4
  1. *The number of pack-years was calculated as the total number of years as a smoker multiplied by the average number of cigarettes smoked per day, divided by 20.
  2. aChi-square test.
  3. Results are mean values and based on the total population, unless stated otherwise.
  4. FEV 1 and ppoFEV 1 are expressed as percentage of predicted values for age, gender and height.
  5. FEV 1 forced expiratory volume in one second, ppoFEV 1 predicted postoperative FEV 1 , paO 2 partial pressure of oxygen, paCO 2 partial pressure of carbon dioxide.