Seasonal variation and living alone are related to pulmonary rehabilitation non-completion

Table 1 Participant's baseline demographic data n (%)

	Completers (n = 85)	Non-completers (n = 26)	P vaule
Age (yr)	67.4 ± 9.1	67.2 ± 9.5	0.93
Sex (female)	36 (42.3)	12 (46.2)	0.822
Social support (living alone)	22 (25.9)	14 (53.8)	0.015
Currently smoking	6 (7.1)	4 (15.4)	0.24
Programs commencing in Winter	28 (32.9)	17 (65.4)	0.006
FEV1% predicted	55.4 ± 22.4	51.4 ± 22.5	0.452
FVC% predicted	76.8 ± 18.5	71.4 ± 19.5	0.243
Charlson Co-morbidity index	1.9 ± 1.1	1.9 ± 1.0	0.851
BODE index	2.6 ± 1.9	3.1 ± 2.1	0.256
BMI (kg/m2)	27.6 ± 5.2	26.6 ± 4.2	0.383
Quadriceps strength (%)	62.3 ± 22.5	60.1 ± 21.8	0.681
6MWD (m)	406 ± 107	350 ± 134	0.03
COPD self-efficacy score (mean score/question)	2.8 ± 0.8	2.8 ± 0.8	0.924
Chronic respiratory Questionnaire	86.7 ± 21.5	73.2 ± 29.9	0.012
CRQ-dyspnea domain (mean score/question)	4.2 ± 1.4	3.9 ± 1.3	0.279
CRQ -fatigue domain (mean score/question)	3.6 ± 1.3	3.1 ± 1.0	0.064
CRQ-emotional domain (mean score/question)	4.6 ± 1.2	4.3 ± 1.3	0.179
CRQ-mastery domain (mean score/question)	4.7 ± 1.3	4.4 ± 1.4	0.456

Continuous data expressed as the mean ± SD. FEV1: Forced expiratory volume in one second; FVC: Forced expiratory volume; BODE: Body-mass-index, Airflow Obstruction, Dyspnea, and Exercise Capacity; BMI: Body mass index; 6MWD: Six minute walk distance; COPD: Chronic obstructive pulmonary disease; CRQ: Chronic respiratory questionnaire.