Skip to main content

Table 1 Baseline characteristics of the study patients

From: Allogeneic umbilical cord-derived mesenchymal stem cell transplantation for treating chronic obstructive pulmonary disease: a pilot clinical study

 All patients (n = 20)Stage C (n = 9)Stage D (n = 11)
Male sex, n (%)20 (100%)9 (100%)11 (100%)
Age, years67 (55, 81)65 (59, 81)68 (55, 81)
Disease duration, years6.0 (1, 25)3.0 (1, 10)11 (2, 25)
Smoker/former smoker, n (%)19 (95%)8 (88.9%)11 (100%)
Smoking amount, pack-years*17.5 (0.0, 70.0)15.0 (0.0, 65.0)20.0 (3.0, 70.0)
Had quit smoking, n (%)*19 (100%)8 (100%)11 (100%)
Time since quitting smoking, years*9.5 (0.0, 39.0)6.0 (0.0, 39.0)10.0 (3.0, 24.0)