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Table 1 School variables (from teachers’ questionnaires), and numbers of participant pupils affected (N = 2505)

From: The prevalence of headache disorders in children and adolescents in Lithuania: a schools-based study

VariableSchoolsPupils
nn%
School locality
 urban13166066.3
 semi-rural333613.4
 rural850920.3
Income category according to estimated proportion of pupils from low-income homes
  < 0.25 (“high-income” school)13182873.0
 0.25–0.5 (“middle-income” school)31686.7
 0.5–0.75 (“low-income” school)850920.3
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