Table 1.

Baseline characteristics

	N=48
Age, yrs ± SD	52.8 ± 19.7
Female:Male (%)	74:26
Race (%)
White	77
Black	4
Hispanic	17
Asian	0
Other	2
CTD (N)
Systemic sclerosis	20
Rheumatoid arthritis	8
Undifferentiated CTD	7
Poly-/dermatomyositis	7
Systemic lupus erythematosus	3
Primary Sjögren’s syndrome	3
FVC%	72.1±21
FEV1%	73.7±21
DLCO%	51.6±21
MDHAQ components
FN	2.3±1.8
PS	2.7±2.2
Pain	4.2±3.2
Fatigue	4.8±3.2
Global	4.7±2.3
RAPID	11.2±6.6
Stiff in AM	32.5±38.8
Joints	9.8±9.2
Dyspnea questionairres
D12	12.3±10.2
UCSD	45.7±26.6

CTD = connective tissue disease; FVC% = percent of predicted normal value for forced vital capacity; FEV1% = percent of predicted normal value for forced expiratory volume at one second; DLCO% = percent of predicted normal value for diffusing capacity for carbon monoxide; MDHAQ = Multi-dimensional Health Assessment Questionairre; FN = physical function; PS = psychological well-being component; RAPID = scale composed of FN, Pain, and patient-assessed global components; D12 = Dyspnea 12; UCSD = University of San Diego Shortness of Breath Questionairre