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. 2017 Sep;9(9):2904–2914. doi: 10.21037/jtd.2017.08.01

Table S6. Disease severity of patients.

Variables (%) Cluster 1 Cluster 2 Cluster 3 Cluster 4 Total P
Respiratory failure 0 (0.0) 2 (3.1) 2 (3.8) 15 (44.1) 19 (9.4) <0.001
ICU 4 (7.7) 5 (7.7) 4 (7.7) 15 (44.1) 28 (13.8) <0.001
Health care utilization in the past year
   Hospitalization 2 (3.8) 1 (1.5) 8 (15.4) 7 (20.6) 18 (8.9) <0.001
   Emergency 11 (21.2) 5 (7.7) 9 (17.3) 12 (35.3) 37 (18.2)
   Outpatient 31 (59.6) 27 (41.5) 16 (30.8) 13 (38.2) 87 (42.9)
   None 8 (15.4) 32 (49.2) 19 (36.5) 2 (5.9) 61 (30.0)
ICS
   High-dose 0 (0.0) 7 (10.7) 3 (5.8) 31 (91.2) 41 (20.2) <0.001
   Moderate-dose 38 (73.1) 24 (36.9) 24 (46.2) 2 (5.9) 88 (43.3)
   Low-dose 7 (13.5) 24 (36.9) 20 (38.5) 1 (2.9) 52 (25.6)
   No use 7 (13.5) 10 (15.4) 5 (9.6) 0 (0.0) 22 (10.8)
Medication use
   No ICS 7 (13.5) 10 (15.4) 5 (9.6) 0 (0.0) 22 (10.8) <0.001
   ICS + LABA 44 (84.6) 49 (75.4) 42 (80.8) 18 (52.9) 153 (75.4)
   ICS + LABA + LAMA 1 (1.9) 6 (9.2) 3 (5.8) 5 (14.7) 15 (7.4)
   Oral or systemic CS 0 (0.0) 0 (0.0) 2 (3.8) 11 (32.4) 13 (6.4)

Data are presented as count (%). P value from chi-squared test of categorical variables between the four clusters. ICU, intensive care unit; ICS, inhaled corticosteroids; LABA, long-acting β-agonists; CS, corticosteroids; LAMA, long-acting muscarinic antagonist.