Journal of Psychosomatic Research · 2010 · 29 citations · 23 references
PharmacyHealth SciencesPediatricsAdolescent DevelopmentAdolescent HealthAdolescent MedicineAdolescent AssessmentHealth Status MeasurementHealth-related Quality Of LifeHealth-related Quality Of Life MeasurementQuality Of LifeAdolescent Health AssessmentPediatric Quality Of LifeProxy-reported Quality Of LifeSelf-report QuestionnairesSelf-report ScalesSelf-reported Health Status
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Understanding interobserver agreement: the kappa statistic.
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Biostatistics 104: correlational analysis.