Skip to main content
. 2009 May 9;9:18. doi: 10.1186/1471-2466-9-18

Table 1.

Demographic Characteristics and summary of pulmonary function tests of the study participants*

Variables Systemic Sclerosis Controls p value
sPAP < 35 mmHg sPAP ≥ 35 mmHg
Participants, No. 20 20 13
Female/Male 16/4 17/3 10/3
Age, ys 55.0 ± 14.0 58.4 ± 10.7 55.3 ± 13.4 0.379
FEV1 (%predicted) 83.9 ± 12.5 87.8 ± 18.6 99.6 ± 5.3 0.425
FVC (%predicted) 84.1 ± 14.3 86.6 ± 22.2 99.0 ± 3.2 0.570
FEV1/FVC 85.6 ± 9.4 85.5 ± 6.9 76.5 ± 2.9 0.882
DLCO (%predicted) 89.9 ± 13.4 60.0 ± 21.8 101.0 ± 4.0 <0.0001
DLCO/VA (%predicted) 88.6 ± 19.9 77.6 ± 16.3 102.3 ± 3.5 0.033
PO2 (mmHg) 81.8 ± 5.0 75.5 ± 12.3 94,8 ± 1.9 0.561
PCO2 (mmHg) 38.6 ± 3.5 37.7 ± 5.8 38.8 ± 1.2 0.942

* Values are given as the mean ± SD unless otherwise indicated. sPAP: systolic pressure in the pulmonary artery, FEV1: Forced Expiratory Volume in 1 sec, FVC: Forced expiratory Vital Capacity, DLCO: Diffusing Capacity of the lungs for Carbon Monoxide, VA: alveolar volume.