BMC Pulmonary Medicine

Table 4 Spearman’s correlations among six-minute walk test parameters or clinical parameters and 36-Item Short Form Health Survey and St George’s Respiratory Questionnaire scores for patients with pulmonary Mycobacterium avium complex disease (n = 103)

From: Association between six-minute walk test parameters and the health-related quality of life in patients with pulmonary Mycobacterium avium complex disease

		SGRQ				SF-36
		Symptoms	Activity	Impacts	Total	PCS	MCS	RCS
SGRQ	Symptoms
	Activity	0.51^§
	Impacts	0.68^§	0.67^§
	Total	0.77^§	0.88^§	0.91^§
SF-36	PCS	−0.44^§	−0.73^§	−0.60^§	−0.70^§
	MCS	−0.32^‡	−0.27^†	−0.28^†	−0.29^†	0.08
	RCS	−0.28^†	−0.42^§	−0.40^§	−0.44^§	0.25^*	0.15
6WMT	6MWD	−0.27^†	−0.54^§	−0.32^†	−0.44^§	0.39^§	0.08	0.20^*
	Initial SpO₂	0.0002	−0.12	−0.08	−0.09	0.05	−0.15	−0.09
	Lowest SpO₂	−0.15	−0.14	−0.21	−0.19	0.10	−0.01	−0.05
	Initial HR	0.16	0.03	0.15	0.11	−0.09	0.03	−0.06
	Final HR	0.11	−0.04	0.04	0.03	0.07	0.00	−0.02
	FBS	0.34^‡	0.56^§	0.54^§	0.58^§	−0.50^§	−0.17	−0.24^*
	DSP	−0.29^†	−0.55^§	−0.33^‡	−0.46^§	0.40^§	0.06	0.19
	DA	0.14	0.12	0.19	0.17	−0.09	0.04	0.07
Clinical parameters	Age	0.09	0.45^§	0.22^*	0.36^‡	−0.51^§	0.10	−0.18
	Disease duration	0.16	0.13	0.11	0.18	−0.06	− 0.02	−0.01
	BMI	−0.30^†	−0.08	− 0.27^†	−0.22^*	0.14	0.07	0.20^*
	CCI	−0.09	0.33^‡	0.13	0.19	−0.35^‡	0.04	−0.05
	%FVC	−0.41^§	−0.28^†	− 0.43^§	−0.43^§	0.15	−0.03	0.07
	%FEV₁	−0.34^‡	−0.26^†	− 0.32^‡	−0.35^‡	0.07	−0.03	− 0.003

6MWD six-minute walk distance, 6MWT six-minute walk test, BMI body mass index, CCI Charlson comorbidity index, DA Desaturation area, DSP Distance-saturation product, FBS final Borg scale, FEV₁ forced expiratory volume in 1 s, FVC forced volume capacity, MCS mental component summary, PCS physical component summary, RCS role/social component score, SF-36 36-Item Short Form Health Survey, SGRQ St. George’s Respiratory Questionnaire, SpO₂ oxygen saturation by pulse oximetry
^*P < 0.05, ^†P < 0.01, ^‡P < 0.001, ^§P < 0.0001

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ISSN: 1471-2466

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