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Table 4 Interrater agreements are presented as the limits of agreement, ICC and equal registration values regarding audiogram data

From: Validation of the Swedish Quality Register for Ear Surgery – SwedEar

  

N

Mean

Difference

Limits of agreement

Systemat

Differencea

ICC

Equal registration values

PTA4

difference

  

(%)

 

(95%)

p value

CI (95%)

0 (%)

 <  = 5 (%)

(mean dB)

Preoperative PTA4

 Right ear

Bone

86 (92)

-0.54

-12.64–11.56

0.85

0.87 (0.81–0.91)

81.4

97.7

-1.24

 

Air

123 (100)

0.46

-8.85–9.76

0.54

0.97 (0.95–0.98)

86.2

95.1

0.76

 Left ear

Bone

81 (90)

0.05

-2.51–2.60

0.62

0.99 (0.99–1.00)

87.7

98.8

-2.04

 

Air

119 (97)

-0.22

-6.59–6.14

0.24

0.98 (0.97–0.99)

93.3

97.5

-0.72

Postoperative PTA4

 Right ear

Bone

81 (93)

-0.09

-3.30–3.13

0.68

0.99 (0.98–0.99)

82.7

97.5

-0.54

 

Air

122 (100)

0.32

-3.69–4.32

0.12

0.99 (0.99–0.99)

89.3

96.7

-0.43

 Left ear

Bone

79 (92)

-0.30

-3.90–3.30

0.15

0.98 (0.98–0.99)

83.5

94.9

-0.41

 

Air

117 (95)

-0.01

-4.74–4,72

0.98

0.99 (0.98–0.99)

89.7

95.7

-0.19

  1. Bone conduction on both sides was not always performed. aThe Wilcoxon signed rank was used to test the difference. N = cases validated with percentage (%) of all cases with at least one observation at registration or validation, CI Confidence Interval, ICC Intraclass Correlation Coefficient. The PTA4 difference represents the change in mean dB for all cases between the reported and validated values