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. 2017 May 8;17:117. doi: 10.1186/s12872-017-0550-1

Table 4.

Nominal variables characteristics - PTP 1 vs. PTP 2 subgroup

Variable PTP 1 subgroup PTP 2 subgroup Difference sig. (2-tailed)
Gender Male: 31 (44,9%) Male: 33 (89,2%) p < 0,001
Female: 38 (55,1%) Female: 4 (10,8%)
Smoking status Smokers: 13 (18,8%) Smokers: 8 (21,6%) p = 0,489
Ex-smokers: 18 (26,1%) Ex-smokers: 13 (35,1%)
Non-smokers: 38 (55,1%) Non-smokers: 16 (43,2%)
Diabetes mellitus Yes: 18 (26,1%) Yes: 10 (27%) p = 0,917
No: 51 (73,9%) No: 27 (73%)

PTP Pre-test probability