Skip to main content

View full-text article in PMC

. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: Sleep Med. 2012 Mar 18;13(5):476–483. doi: 10.1016/j.sleep.2011.12.007

Table 1.

Baseline characteristics of 98 subjects with COPD

	N (%) or Mean ± SD
Age, years	67.6 ± 5.4

Female gender	55 (56%)

Married or Cohabitating	51 (52%)

Education:
High School or Less	25 (26%)

White non-Latino	83 (85%)

Body-Mass Index, kg/m²
BMI < 18.5	6 (6%)
BMI 18.5 – 24.9	31 (32%)
BMI 25.0 – 29.9	33 (34%)
BMI ≥ 30	28 (29%)

Cough Symptoms	53 (54%)

Dyspnea Scale Score	3.5 ± 2.5

COPD Severity Score	7.8 ± 6.1

Oxygen Saturation ≤ 92%	21 (21%)

FEV₁ liters	1.4 ± 0.7

FEV₁ % predicted	54% ± 22%

GOLD Stage
Stage 1	15 (15%)
Stage 2	41 (42%)
Stage 3	29 (30%)
Stage 4	13 (13%)