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Table 1 Demographic data from both treated groups

From: Metamizole versus placebo for panretinal photocoagulation pain control: a prospective double-masked randomized controlled study

Group characteristics
Age
 Mean value (years) 52.9 (±9.4)
  N %
Sex
 Female 10 47.6
 Male 11 52.4
Education
 Preliminary school 11 52.4
 High school 8 38.1
 None 2 9.5
Race
 White 12 57.1
 Black 4 19.0
 Miscegenous 5 23.8
Diabetes
 DM type 1 4 19.0
 DM type 2 17 81.0
Total 21 100.0