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Table 1 Categorisation of study design

From: Psychosocial factors and chronic spontaneous urticaria: a systematic review

Total studies for data extraction n = 18

Observational case control studies n = 8

Cohort studies n = 3

Cross sectional studies n = 5

 

Experimental study using intervention n = 2

Observational narrative Study n = 2

 

Observational Cohort Studies n = 5

 
  1. Studies were conducted in the United Kingdom (n = 4), China (n = 3), Germany (n = 2), Ireland (n = 1), Poland (n = 1), Italy (n = 1), Turkey (n = 2), Malaysia (n = 1), New Zealand (n = 1), Taiwan (n = 1) and the United States of America (n = 1)
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BMC Psychology

ISSN: 2050-7283

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