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Table 2 Differences in assessed symptoms of nontuberculous mycobacterial pulmonary disease between patients diagnosed using different methods upon enrolment

From: Nontuberculous mycobacterial pulmonary disease diagnosed by two methods: a prospective cohort study

Variables Total patients N = 347 Sputum group n = 279 Bronchoscopy group n = 68 P-value
Cough 0.002
 None 129 (37.2) 90 (32.3) 39 (57.4)  
 Sometimes 77 (22.2) 67 (24.0) 10 (14.7)  
 Often 54 (15.6) 46 (16.5) 8 (11.8)  
 Almost everyday 87 (25.1) 76 (27.2) 11 (16.2)  
Sputum < 0.001
 None 105 (30.3) 66 (23.7) 39 (57.4)  
  ≤ 3 days per week 53 (15.3) 43 (15.4) 10 (14.7)  
  ≥ 4 days per week 35 (10.1) 30 (10.8) 5 (7.4)  
 Almost everyday 154 (44.4) 140 (50.2) 14 (20.6)  
mMRC dyspnoea scale 0.581
 0 131 (37.9) 102 (36.7) 29 (42.7)  
 1 197 (56.9) 159 (57.2) 38 (55.9)  
 2 15 (4.3) 14 (5.0) 1 (1.5)  
 3 2 (0.6) 2 (0.7) 0 (0.0)  
 4 1 (0.3) 1 (0.4) 0 (0.0)  
Haemoptysis 63 (18.2) 50 (17.9) 13 (19.1) 0.864
Postnasal drip 92 (26.5) 84 (30.1) 8 (11.8) 0.007
SGRQ score 16.1 (8.1, 30.6) 17.6 (9.5, 32.4) 9.9 (4.9, 20.2) < 0.001
Fever 39 (11.2) 32 (11.5) 7 (10.3) 0.850
Weight loss 30 (8.7) 25 (9.0) 5 (7.4) 0.800
Anxiety scale 5 (2, 7) 5 (2, 7) 5 (2, 7) 0.632
Depression scale 5 (2, 7) 5 (2, 8) 5 (3, 7) 0.716
  1. Values are presented as number (percentage) or median (interquartile range)
  2. Abbreviations: mMRC modified Medical Research Council, SGRQ St. George’s Respiratory Questionnaire