TABLE 4.

Comparison between patients experiencing one admission versus one or more readmissions (univariate analysis)

Characteristics	One admission (n=191)	Read-mission (n=119)
Categorical variables	%	%	P	OR	95% CI
Men	52.6	52	0.640	0.89	0.56–1.41
Home O2 preadmission	24	45	0.000*	2.62	1.58–4.32
Formal home support†	36	44	0.325	1.35	0.78–2.33
Home care nurse†	8	17	0.075	2.20	0.94–5.19
Living in a nursing home	10	7	0.409	0.65	0.28–1.54
Community-based PT/OT†	8	11	0.561	1.47	0.48–4.47
Previous participation in a COPD education program†	17	55	0.041	6.00	1.21–29.73
Current smoker	39	42	0.542	1.17	0.72–1.89
Living with someone	57	53	0.543	0.85	0.53–1.38
Activities of daily living
Problems with dressing†	58	76	0.003*	2.27	1.32–3.91
Charlson comorbidity
Diabetes	18	7	0.004	0.32	0.14–0.72
Congestive heart failure	34	41	0.223	1.37	0.85–2.20
Ischemic heart disease	15	11	0.489	0.73	0.36–1.47
Other respiratory disease	50	66	0.005*	1.99	1.24–3.21
History of lung infection	26	42	0.005*	2.06	1.25–3.40
Follow-up by respirologist	41	50	0.102	1.47	0.93–2.34
Continuous variables	Mean ± SD	Mean ± SD	P	OR	95% CI
Age, years	74±12	72±12	0.229	0.99	0.97–1.01
Length of stay, days	11±13	8±11	0.074*	0.98	0.96–1.00
Body mass index, kg/m2†	25±7	23±6.5	0.074	0.95	0.90–1.00
FEV1, L†	37±17	29±12	0.674	1.13	0.64–2.00

^*Indicates P values less than 0.1 (cutoff for inclusion in the multiple regression analysis).

^†Indicates variables with greater than 10% missing data. COPD Chronic obstructive pulmonary disease; FEV₁ Forced expiratory volume in 1 s; O₂ Oxygen; PT/OT Physiotherapy/occupational therapy