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Table 8 Internal consistency for different COMQ-12 versions

From: Validation of a Spanish version of the health-related quality of life (HRQoL) measure for Chronic Otitis Media (COMQ-12)

Questionnaire language

Participants (n)

Patients with COM (n)

Cronbach Alpha

Italian

48

48

0.80

English

50

50

0.89

Dutch

70

35

0.83

Portuguese

100

100

0.85

Kannada (India)

100

80

0.88

Turkish

100

50

0.81

Serbian

120

60

0.82

Russian

168

108

0.86

Korean

212

106

0.94

Spanish

231

200

0.86