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Table 1 Comparison among ICU AECOPD patients, stable COPD patients, and healthy controls

From: Low Serum retinol-binding protein-4 levels in acute exacerbations of chronic obstructive pulmonary disease at intensive care unit admission is a predictor of mortality in elderly patients

Parameter

AECOPD

Stable COPD

Healthy controls

p value

Number

100

46

50

 

Sex (male/female)

72/28

34/12

34/16

ns

Age median (range)(yr)

76 (66–91)

75 (65–89)

75 (65–86)

ns

BMI median (range)(m2/kg)

20.7 (17.2-26.4)

21.6* (17.8-27.5)

23.4** (19.5-26.8)

< 0.01

RBP4 median(range)(mg/L)

59.7 (21.3-128.6)

91.2* (42.1-343.9)

113.6** (57.2-369.2)

< 0.001

  1. BMI, body mass index; RBP4, retinol-binding protein-4. ns, not significant; *p < 0.01, AECOPD vs stable COPD; **p < 0.001, stable COPD vs healthy controls.