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Table 2 Demographic data related to current smoking status for control and cancer patients measured by PTR-MS*).

From: Noninvasive detection of lung cancer by analysis of exhaled breath

   Smokers Non-smokers Ex-smokers Total
   n Age Median (range) n Age Median (range) n Age Median (range) n Age Median (range)
Control Female 56 (55) 43 (18-81) 176 (171) 57.5 (17-91) 39 (37) 55 (25-85) 271 (263) 53.83 (17-91)
  Male 28 (26) 46 (23-77) 95 (91) 53 (24.5-86) 47 (47) 64 (33-88) 170 (164) 56.25 (23-88)
  Total 84 (81) 44 (18-81) 271 (262) 57 (17-91) 86 (84) 61.25 (25-88) 441 (427) 54 (17-91)
CA- Patients Female 23 (23) 55 (46-77) 18 (17) 71 (39-82.5) 39 (39) 64.5 (44-83) 80 (79) 63 (39-83)
  Male 45 (43) 60 (40-77) 5 (5) 61 (51-70) 90 (88) 66.3 (46.4-81) 140 (136) 65 (40-81)
  Total 68 (66) 58 (40-77) 23 (22) 67 (39-82.5) 129 (127) 66 (44-83) 220 (215) 64.4 (39-83)
  1. *) Some measurements for PTR-MS were excluded (because of device variations), in brackets the number of subjects were at least 1 measurement was valid is given.