Comparison of Different Disease-Specific Health-Related Quality of Life Measurements in Patients with Long-Term Noninvasive Ventilation

Table 3

Correlations between HRQL questionnaires and physiological measures.

	SRI								MRF-26			SGRQ
	RC	PF	AS	SR	AX	WB	SF	SS	Dai	Per	Tot	Sym	Act	Imp	Tot
Age	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
BMI	—	0.31	—	0.31	—	—	—	0.29	−0.38	—	−0.33	—	—	—	—
Smoking	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
FEV1	0.30	—	—	—	—	—	—	—	−0.35	—	—	−0.31	−0.40	—	−0.31
FVC	0.39	—	—	—	—	0.28	—	0.30	−0.49	−0.38	−0.47	—	−0.42	—	−0.33
PaO2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
PaCO2	−0.41	—	—	−0.28	—	—	−0.38	−0.38	0.38	—	0.33	—	—	—	—
BE	—	—	—	—	—	—	−0.30	−0.28	0.34	—	0.27	—	—	—	—
Dyspnea	−0.60	−0.45	−0.29	−0.46	−0.31	−0.42	−0.45	−0.56	0.72	0.46	0.51	0.59	0.72	0.62	0.69
Anxiety	−0.60	−0.34	−0.54	−0.50	−0.51	−0.67	−0.68	−0.69	0.46	0.57	0.73	0.39	0.36	0.51	0.51
Depression	−0.60	−0.48	−0.50	−0.44	−0.60	−0.56	−0.53	−0.70	0.58	0.62	0.78	0.37	0.45	0.59	0.59

Missing values (—) indicate no significant relationships (). SRI, Severe Respiratory Insufficiency; RC, respiratory complaints; PF, physical functioning; AS, attendant symptoms and sleep; SR, social relationships; AX, anxiety; WB, psychological well-being; SF, social functioning; SS, summary score; MRF, Maugeri Respiratory Failure; Dai, daily activities; Per, perceived disability; Tot, total; SGRQ, St. George’s Respiratory Questionnaire; Sym, symptoms; Act, activities; Imp, impacts; BMI, body mass index; FEV₁, forced expiratory volume in one second; FVC, forced vital capacity; PaO₂, arterial oxygen pressure; PaCO₂, arterial carbon dioxide pressure; BE, base excess.