Table 3– Predicting length of hospital admission in chronic obstructive pulmonary disease patients

	Univariate analyses	Multivariate models
Fatigue experiences model
Fatigue experiences	4.19 (2.75–6.36)***	3.72 (2.37–5.84)***
BODE	1.56 (0.77–3.17)	1.42 (0.81–2.47)
Age	0.50 (0.31–0.82)*	0.85 (0.44–1.65)
Male	1.53 (0.33–7.0)	2.11 (0.81–5.49)
Fatigue impacts model
Fatigue impacts	2.48 (1.46–4.21)***	2.36 (1.43–3.90)***
BODE	1.56 (0.77–3.17)	1.21 (0.51–2.90)
Age	0.50 (0.31–0.82)*	0.88 (0.42–1.84)
Male	1.53 (0.33–7.0)	4.29 (1.12–16.50)*

Data are presented as incidence rate ratio (95% CI). n = 83. BODE: body mass, level of airflow obstruction, disablement due to dyspnoea and exercise capacity. *: p<0.05; ***: p<0.001.