Three-year follow-up of Interleukin 6 and C-reactive protein in chronic obstructive pulmonary disease

Respiratory Research

Table 2 Comparison of baseline characteristics of the excluded patients versus those completing the study

Variables	Excluded patients (n = 24)	Studied patients (n = 53)	p-value
Gender F/M (n)	8/16	18/35	0.84
Age (years)	65.5 ± 9.3	62.9 ± 8.9	0.23
FEV₁ (%)	61.3 ± 30.0	56.0 ± 21.1	0.65
FVC (%)	94.7 ± 28.9	88.9 ± 20.9	0.35
FEV₁/FVC	50.7 ± 13.7	50.5 ± 12.1	0.84
SpO₂ (%)	92.9 ± 4.9	93.0 ± 3.1	0.49
MMRC (score)	1.6 ± 1.0	1.6 ± 1.0	0.96
6MWD (m)	406.9 ± 105.7	444.0 ± 82.8	0.10
BMI (kg/m²)	24.9 ± 5.4	25.6 ± 5.5	0.62
IL-6 (pg/ml)	1.4 ± 1.0	0.9 ± 0.7	0.04
CRP (mg/L)	9.7 ± 12.5	8.0 ± 11.8	0.42

Comparisons between excluded patients and those completing the study were performed using the unpaired t-test or Mann–Whitney test; p ≤ 0.05. Plus–minus values are presented as mean ± SD. Other values are presented as numbers. Definition of abbreviations: Gender F/M = gender female/male; FEV₁ = forced expiratory volume in the first second (% of predicted); FVC = forced vital capacity (% of predicted); BMI = body mass index; SpO₂ = pulse oximeter oxygen saturation; MMRC = Modified Medical Research Council; 6MWD = six-minute walking distance; BMI = body mass index; IL-6 = Interleukin 6; CRP = C-reactive protein.

ISSN: 1465-993X