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Table 2 Cronbach's alpha and McDonald's Omega values

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

Item Item-scale correlation Cronbach’s alpha (One item removed) McDonald’s omega (One item removed)
Q1 0.56 0.84 0.88
Q2 0.43 0.85 0.89
Q3 0.67 0.83 0.88
Q4 0.63 0.83 0.88
Q5 0.50 0.84 0.89
Q6 0.58 0.84 0.88
Q7 0.63 0.83 0.88
Q8 0.50 0.84 0.88
Q9 0.56 0.84 0.88
Q10 0.29 0.86 0.89
Q11 0.45 0.85 0.89
Q12 0.57 0.84 0.89