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Table 3 Comparison of the different studies in the literature that assessed the health related quality by CRQ-SAS and the current one

From: The reliability of an arabic version of the self-administered standardized chronic respiratory disease questionnaire (CRQ-SAS)

Study

Year

Country

FEV1

Dyspnea

Fatigue

Emotions

Mastery

Williams et al [10]

2001

UK

1.13 L

2.4

3.3

4.4

4.2

Puhan et al [12]

2004

Multinational

45.1%

3.6

3.8

4.1

4.25

Schunemann et al [13]

2005

Canada/USA

45.4%

4.1

3.9

4.7

4.6

Oh et al [23]

2009

Korea

52.3%

4.4

4.0

4.6

5.2

Al-Moamary et al (current study)

2009

Saudi Arabia

58.4%

4.9

4.6

5.0

5.2