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. 2016 Nov 8;16:140. doi: 10.1186/s12890-016-0304-3

Table 2.

Clinical characteristics

Overall Treatment non-adherence based on Morisky-Green baseline score
High-Risk Low-Risk p-value
N = 114 27 (23.7) 87 (76.3)
Time of evolution of COPD (years)
 Mean (S.D.) 8.8 (6.8) 7.7 (6.2) 9.2 (7.0) 0.314U
 Missing 1 0 1
Number of moderate exacerbations in the last 12 months
 Mean (S.D.) 1.6 (1.1) 1.5 (0.8) 1.6 (1.2) 0.967U
 Missing 0 0 0
Number of severe exacerbations in the last 12 months
 Mean (S.D.) 1.2 (1.6) 0.7 (1.0) 1.4 (1.8) 0.049U
 Missing 0 0 0
Total number of exacerbations in the last 12 months
 Mean (S.D.) 2.8 (1.4) 2.2 (0.5) 3.0 (1.5) 0.003U
 2–3 exacerbations n(%) 97 (85.1) 26 (96.3) 71 (81.6) 0.069F
 4 or more exacerbations n(%) 17 (14.9) 1 (3.7) 16 (18.4)
 Missing 0 0 0
Comorbidities
 Cardiac comorbidities n(%) 41 (36.0) 8 (29.6) 33 (37.9) 0.432C
 Coronary heart disease (CHD) n(%) 22 (19.3) 4 (14.8) 18 (20.7) 0.499C
 Peripheral vascular disease n(%) 13 (11.4) 2 (7.4) 11 (12.6) 0.730F
 Missing n 0 0 0

COPD chronic obstructive pulmonary disease, S.D standard deviation

CChi-square test; FFisher’s exact test; UMann-Whitney U test