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Table 1 Patient characteristics at baseline

From: Hypo- and hypercapnia predict mortality in oxygen-dependent chronic obstructive pulmonary disease: a population-based prospective study

Characteristic

All patients, n = 2,249

Age, years

74.7 ± 8.2

Male/female gender

921/1328

PaO2 (air), kPa

6.5 ± 0.9

PaCO2 (air), kPa

6.3 ± 1.2

PaO2 (oxygen), kPa

8.7 ± 1.1

PaCO2 (oxygen), kPa

6.5 ± 1.3

FEV1†

0.71 (0.6 - 1.0)

Known ever to smoke, n (%)

2.106 (94)

Body mass index, n (%)

 

  < 18.5

280 (13)

  18.5 – 24.9

1397 (62)

  25 – 29.9

338 (15)

  ≥ 30

234 (10)

WHO performance status, n (%)

 

  0

132 (6)

  1

881 (39)

  2

714 (32)

  3

292 (13)

  4

31 (1)

  Missing

199 (9)

Cardiovascular diagnoses, n (%)

 

  0

755 (34)

  1

823 (37)

  2

449 (20)

  >2

222 (10)

  1. Data presented as mean ± SD unless otherwise specified. Hospitalizations and diagnoses were assessed within the four-year period before the start of long-term oxygen therapy (LTOT).
  2. †Median (first quartile – third quartile).
  3. Abbreviations: FEV1, forced expiratory volume in one second.
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Respiratory Research

ISSN: 1465-993X

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