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Table 1 School variables (from teachers’ questionnaires), and numbers of participant pupils affected (N = 4266)

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

Variable

Pupils affected

n

%

School locality

 urban

1831

42.9

 semi-rural

873

20.5

 rural

1562

36.6

Pupils’ home-income*

 “higher”

1378

32.3

 “middle”

2015

47.2

 “lower”

873

20.5

Home proximity*

 “mostly close”

2519

59.0

 “many distant”

1747

41.0

  1. *see text for explanation