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Table 2 Bland Altman analysis and intraclass correlation coefficients between self-reported and registered age at asthma diagnosis

From: Agreement between self-reported and registered age at asthma diagnosis in Finland

 

Helsinki

Western Finland

Total

Lack of allergy

Self-report within 10 years

Total

Lack of allergy

Self-report within 10 years

Bland-Altman agreement:

Bias and [LoA] in years

−2.0

[− 19.0, 1.0]

−1.0

[− 14.9, 1.0]

−1.0

[− 2.5, 1.0]

−1.0

[− 20.9, 1.0]

−1.0

[− 8.1, 1.0]

0

[− 4.0, 1.0]

Intraclass correlation:

ICC with [95% CI]

0.826

[0.593, 0.909]

0.897

[0.756, 0.933]

0.989

[0.980, 0.994]

0.866

[0.746, 0.922]

0.947

[0.883, 0.972]

0.991

[0.982, 0.996]

  1. LoA, limits of agreement; ICC, intraclass correlation coefficient; CI, confidence interval