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Table 2 Diseases covered by controls (N = 294) of an asthma case-control study from Valdivia, Chile

From: Asthma in changing environments - chances and challenges of international research collaborations between South America and Europe - study protocol and description of the data acquisition of a case-control-study

  N %
Common cold (partly including fever) 59 20.0
Orthopedics (including accidents) 38 12.9
Surgery 37 12.6
Atopic diseases (including dermatology) 33 11.2
Otolaryngology 24 8.2
Gastroenterology 24 8.2
Dental check 17 5.8
Neurology 15 5.1
Routine check 12 4.1
Infectious diseases 9 3.1
Psychological problems 7 2.4
Endocrinology 5 1.7
Gynaecology 5 1.7
Ophtalmology 3 1.0
Nephrology 3 1.0
Vaccination programme 2 0.7
Missing 1 0.3