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

Table 3 Spearman’s correlations among six-minute walk test parameters and clinical parameters for patients with pulmonary Mycobacterium avium complex disease (n = 103)

	Age	Disease duration	BMI	CCI	%FVC	%FEV₁	6MWD	Initial SpO₂	Lowest SpO₂	Initial HR	Final HR	FBS	DSP
Age
Disease duration	− 0.09
BMI	0.01	0.10
CCI	0.32^‡	− 0.04	0.09
%FVC	− 0.06	− 0.08	0.21^*	− 0.05
%FEV₁	0.05	−0.19	0.02	− 0.01	0.78^§
6MWD	−0.34^‡	−0.03	− 0.16	− 0.16	0.18	0.21^*
Initial SpO2	−0.03	−0.18	−0.12	−0.05	0.21^*	0.32^‡	0.08
Lowest SpO2	−0.07	−0.11	− 0.05	− 0.08	0.23^*	0.27^†	0.03	0.44^§
Initial HR	−0.06	0.06	− 0.24^*	− 0.11	−0.13	−0.05	−0.01	−0.17	−0.17
Final HR	−0.16	−0.04	−0.07	−0.13	−0.18	−0.11	0.18	−0.17	−0.17	0.56^§
FBS	0.28^†	0.23^*	− 0.09	0.28^†	−0.22^*	− 0.12	−0.17	−0.05	−0.08	−0.002	−0.04
DSP	−0.35^‡	−0.05	−0.15	−0.17	0.23^*	0.26^†	0.99^§	0.14	0.16	−0.03	0.16	−0.17
DA	0.06	0.17	0.07	0.08	−0.25^*	− 0.29^†	−0.01	−0.54^§	−0.95^§	0.20^*	0.24^*	0.11	−0.14

6MWD six-minute walk distance, 6MWT six-minute walk test, BMI body mass index, BS Borg scale, 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, HR heart rate, SpO₂ oxygen saturation by pulse oximetry
^*P < 0.05, ^†P < 0.01, ^‡P < 0.001, ^§P < 0.0001

ISSN: 1471-2466