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Table 2 Sample size calculation for the cross-sectional and longitudinal study

From: The MentDis_ICF65+ study protocol: prevalence, 1-year incidence and symptom severity of mental disorders in the elderly and their relationship to impairment, functioning (ICF) and service utilisation

  Expected no. of evaluable patients Expected standard error Expected width of 95% confidence interval
Overall 3,000 0.8% ± 1.7%
Country 500 2.0% ± 4.1%
5-years age group 1,000 1.4% ± 2.9%
5-years age group per country 167 3.5% ± 7.1%