Table 7 Descriptive statistics and correlation of the ZCMEI-21-Chn and the EQ-5D-5L, Cronbach’s α in the present study and the original validation study of the German-language ZCMEI-21, ZCMEI-21-Jap, ZCMEI-21-E, ZCMEI-21-It
Current Study (ZCMEI-21-Chn) | ZCMEI-21 [10] | ZCMEI-21-Jap [16] | ZCMEI-21-E[17] | ZCMEI-21-It [18] | |
|---|---|---|---|---|---|
ZCMEI-21 total score (SD) | 32.0 (14.5) | 29.7 (16.1) | 25.2 (11.8) | 25.9 (15.8) | 29.8 (14.6) |
I. Ear signs and symptoms | 5.9 (3.8) | 5.1 (3.9) | 2.3 (2.0) | 4.2 (3.9) | 5.5 (4.5) |
II. Hearing | 8.7 (4.8) | 8. 5 (5.2) | 7.6 (5.1) | 8.2 (5.1) | 7.6 (5.1) |
III. Psychosocial impact | 13.4 (7.7) | 13.1 (7.9) | 8.2 (6.6) | 10.9 (7.9) | 13.7 (7.8) |
IV. Medical resources | 4.0 (2.6) | 3.0 (2.3) | 3.0 (2.4) | 2.6 (2.4) | 2.9 (2.7) |
EQ-5D-5L (SD) | |||||
Descriptive system score | 0.84 (0.17) | 0.92 (0.14) | 0.89 (0.15) | 0.80 (0.23) | 0.84 (0.15) |
VAS score | 77.1 (13.7) | N/A | 77.3 (16.6) | 79.0 (19.7) | 76.6 (15.0) |
Total score correlation | |||||
To question directly assessing HRQoL | r = 0.40 a | r = 0.74 a | r = 0.68 a | r = 0.74 a | r = 0.62 a |
To EQ-5D-5L descriptive system score | r = 0.57 a | r = 0.60 a | r = 0.49 a | r = 0.60 a | r = 0.39 a |
Cronbach’s α | 0.88 | 0.91 | 0.85 | 0.91 | 0.86 |