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International Journal of Chronic Obstructive Pulmonary Disease logoLink to International Journal of Chronic Obstructive Pulmonary Disease
. 2021 Mar 29;16:853. doi: 10.2147/COPD.S312220

The Relationship Between Morning Symptoms and the Risk of Future Exacerbations in COPD [Corrigendum]

PMCID: PMC8018545  PMID: 33824585

Sun T, Li X, Cheng W, et al. Int J Chron Obstruct Pulmon Dis. 2020;15:1899–1907.

The authors have advised that there are errors in Table 3 on page 1905. The correct table is shown below.

Table 3.

The Relationship Between Morning Symptoms and the Exacerbations of the One-Year Follow-Up Period

All Patients (N = 78) Morning Symptoms Score < 30.0 (N = 39) Morning Symptoms Score ≥ 30.0 (N = 39) P-value
Exacerbations during follow-up, n (%)
 No exacerbation 46 (59.0) 27 (69.2) 19 (48.7) 0.066
 Moderate exacerbations 22 (28.2) 11 (28.2) 11 (28.2) 1.000
 Severe exacerbations 17 (21.8) 3 (7.7) 14 (35.9) 0.003
 Frequent exacerbations 17 (21.8) 6 (15.4) 11 (28.2) 0.170
Exacerbations during follow-up, median [IQR]
 Total exacerbations 0 (0,1) 0 (0,1) 1 (0,2) 0.078
 Moderate exacerbations 0 (0,1) 0 (0,1) 0 (0,1) 0.950
 Severe exacerbations 0 (0,0) 0 (0,0) 0 (0,1) 0.002

Notes: Data are presented as the median (IQR), or number (%). Data were compared between two groups using Mann–Whitney U-test, and 2χ test.

Abbreviations: SD, standard deviation; IQR, interquartile range.


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