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. 2019 Jul 18;19:130. doi: 10.1186/s12890-019-0895-6

Table 3.

Characteristics of f-IPF and s-IPF patients

Patients characteristics f-IPF index patients n = 28 s- IPF n = 147 p-value
mean value ± SD mean value ± SD
Male [%] 61 79 0.068
Height [cm] 170 ± 8 173 ± 7 0.058
Weight [kg] 80 ± 14 85 ± 16 0.314
BMI [kg/m2] 28 ± 5 28 ± 6 0.630
Current tobacco consumption [%] 0 2 1.000
Former tobacco consumption [%] 64 73 0.514
Pack years [n] 14 ± 18 19 ± 20 0.341
Age at onset of symptoms [years] 55.4 ± 10 63.2 ± 11 0.001
Age at first diagnosis [years] 58.3 ± 10 65.1 ± 10 0.001
Age at death [years] 67.0 ± 8 71.8 ± 8 0.059
Death due to IIP [%] 90 95 1.000

Abbreviations: IIP idiopathic interstitial pneumonia, IPF idiopathic pulmonary fibrosis, SD standard deviation, BMI body mass index, pack years number of packs per day x smoker years, occupational exposure occupational contact with potentially lung-damaging substances