Skip to main content
. 2017 Mar 3;12:785–792. doi: 10.2147/COPD.S121885

Table 3.

Complementary diagnostic evaluations requested

Variables Average*
(n=621)
Interhospital range P-value# Autumn
(n=179)
Winter
(n=144)
Spring
(n=175)
Summer
(n=123)
P-value
Chest radiography (n) 426 (68.6) 19.2–100 <0.001 119 (66.5) 103 (71.5) 116 (66.3) 88 (71.5) 0.418
Spirometry (n) 510 (82.1) 52.5–100 <0.001 154 (86.0) 116 (80.6) 143 (81.7) 97 (78.9) 0.389
Computed tomography (n) 96 (15.5) 2.5–37.5 <0.001 28 (15.6) 20 (13.9) 31 (17.7) 17 (13.8) 0.751
Echocardiogram (n) 36 (5.8) 0–9.9 0.325 10 (5.6) 6 (4.2) 10 (5.7) 10 (8.1) 0.584
Sputum eosinophilia (n) 0 (0) 0–0 0 (0) 0 (0) 0 (0) 0 (0)
Serum total IgE (n) 34 (5.5) 0–17.2 <0.001 13 (7.3) 8 (5.6) 6 (3.4) 7 (5.7) 0.469
Serum α1-antitripsin (n) 53 (8.5) 0–19.8 <0.001 20 (11.2) 18 (12.5) 8 (4.6)§ 7 (5.7) 0.026
Sputum culture (n) 53 (8.5) 0–23.4 <0.001 16 (8.9) 13 (9.0) 16 (9.1) 8 (6.5) 0.846
Six-minute walking test (n) 110 (17.7) 0–82.5 <0.001 33 (18.4) 27 (18.8) 26 (14.9) 24 (19.5) 0.700
Shuttle walking test (n) 0 (0) 0–0 0 (0) 0 (0) 0 (0) 0 (0)
Cardiopulmonary exercise test (n) 3 (0.5) 0–3.4 0.316 2 (1.1) 0 (0) 0 (0) 1 (0.8) 0.344
Densitometry (n) 4 (0.6) 0–5.1 0.001 2 (1.1) 0 (0) 0 (0) 1 (0.8) 0.653
Any other health status questionnaires excluding CAT (n) 0 (0) 0–0 0 (0) 0 (0) 0 (0) 0 (0)

Notes:

*

Data are expressed as mean (SD) or absolute (relative) frequencies depending on the nature of the variable.

#

Calculated for the variability between centers using ANOVA and Chi-square test, depending on the nature of the variable.

Calculated for the variability between seasons using ANOVA and Chi-square test, depending on the nature of the variable.

§

Significant difference versus the rest of the seasons.

Abbreviations: ANOVA, analysis of variance; SD, standard deviation; CAT, COPD assessment test.

HHS Vulnerability Disclosure