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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.