Background
Methods
Questionnaire
Translation
Patients and control group
Internal consistency and test-retest reliability
Known group validity and convergent validity
Statistics
Results
Patients and control group
Amount of patients (n) | Age, median (range) | Female-to-male ratio | Duration of otorrhea in months, median (range) | Revision surgery n (%) | Previous ear operations, median (range) | |
---|---|---|---|---|---|---|
CSOM group | 29 | 54 (27–80) | 13:16 | 33 (3–380) | 17 (59%) | 1 (0–8) |
Control group | 26 | 64 (24–92) | 15:11 | NA | NA | NA |
Internal consistency and test-retest reliability
Domain | Items | α if item deleted | Corrected item-total correlation |
---|---|---|---|
Activity restriction | a1. Swimming | .05 | .56 |
α = .47 | a2. Keep water out | .30 | .33 |
a3. Interfering with social activities | .74 | .10 | |
Symptoms | s1. Hearing loss | .69 | .44 |
α = .72 | s2. Drainage | .65 | .59 |
s3. Pain | .76 | .11 | |
s4. Odor | .61 | .71 | |
s5. Impact of hearing loss | .66 | .51 | |
s6. Frequency of drainage | .74 | .12 | |
s7. Impact of odor | .63 | .62 | |
Medical resource | m1. Doctor visits | .68 | .41 |
α = .68 | m2. Oral antibiotics | .59 | .48 |
m3. Ear drops | .42 | .60 |
Known group validity and convergent validity
tA Mean (SD) | tS Mean (SD) | tM Mean (SD) | tTotal Mean (SD) | pA Mean (SD) | pS Mean (SD) | pM Mean (SD) | pTotal Mean (SD) | |
---|---|---|---|---|---|---|---|---|
CSOM (n = 29) | 9.59 (3.44) | 19.69 (5.86) | 9.50 (3.10) | 38.79 (8.62) | 11.96 (3.43) | 29.64 (7.06) | 12.45 (2.81) | 53.64 (11.90) |
Controls (n = 26) | 15.89 (0.32) | 39.40 (1.57) | 14.91 (0.43) | 70.42 (1.47) | 15.39 (2.52) | 38.13 (3.95) | 14.83 (0.65) | 68.35 (5.47) |
p= | < 0.001 | < 0.001 | < 0.001 | < 0.001 | 0.001 | 0.01 | < 0.001 | < 0.001 |
Subscale Activity Restriction | Subscale Symptoms | Subscale Medical Resources | Total questionnaire | ||
---|---|---|---|---|---|
Duration of preoperative otorrhea | < 33 months, Mean (SD) n = 14 | 3.92 (3.73) | 12.15 (6.53) | 4.29 (2.55) | 20.23 (8.73) |
≥ 33 months Mean (SD) n = 15 | 0.60 (3.44) | 7.33 (8.38) | 1.79 (4.42) | 10.21 (13.64) | |
p | 0.02 | 0.11 | 0.08 | 0.03 | |
Primary versus revision surgery | Primary n = 12 | 2.64 (3.41) | 9.55 (7.45) | 3.50 (3.61) | 15.45 (10.33) |
Revision n = 17 | 1.82 (4.25) | 9.56 (8.30) | 2.69 (3.96) | 14.75 (14.00) | |
p | 0.60 | 0.99 | 0.58 | 0.88 | |
Amount of previous operations | 0 operations n = 12 | 2.64 (3.41) | 9.55 (7.45) | 3.50 (3.61) | 15.45 (10.33) |
≥ 1 operations n = 17 | 1.82 (4.25) | 9.56 (8.30) | 2.69 (3.96) | 14.75 (14.00) | |
p | 0.60 | 0.99 | 0.58 | 0.88 | |
Postoperative dry ears | Yes n = 24 | 2.65 (3.71) | 11.65 (6.67) | 3.79 (3.43) | 18.00 (10.16) |
No n = 5 | −0.20 (4.27) | 0.00 (5.48) | −1.50 (2.38) | −2.00 (11.17) | |
p | 0.14 | < 0.01 | < 0.01 | < 0.01 | |
Postoperative improved hearing | Yes n = 21 | 1.86 (4.56) | 15.43 (5.53) | 5.00 (1.69) | 22.14 (5.11) |
No n = 8 | 2.24 (3.77) | 7.62 (7.59) | 2.25 (4.10) | 12.55 (13.33) | |
p | 0.83 | 0.02 | 0.02 | 0.01 | |
Postoperative decreased hearing | Yes n = 5 | 2.00 (2.83) | 7.00 (5.57) | 1.20 (3.56) | 8.20 (13.31) |
No n = 24 | 2.17 (4.14) | 10.13 (8.24) | 3.43 (3.76) | 16.59 (11.98) | |
p | 0.93 | 0.43 | 0.24 | 0.17 |
D-CES domain | Matching health domain SF-36 | Correlation coefficient preoperatively | Correlation coefficient postoperatively |
---|---|---|---|
Activity restriction | Social functioning subscale | 0.59 | 0.29 |
Symptoms | Bodily pain subscale | 0.29 | 0.29 |
Medical resources | NA | – | – |
Total questionnaire | General Health perceptions subscale | 0.17 | 0.37 |