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Table 1 Rubella antibody status in hearing impaired (case) and normal control children aged 1–4 years, Tehran, Iran

From: Congenital rubella syndrome in Iran

Rubella antibody status Case n (%) Control n (%) Odds Ratio (95% CI)
Seropositive 22 (19.5) 10 (8.9)  
Seronegative 91 (80.5) 102 (91.1) 2.47 (1.04–5.94)
Total 113 (100) 112 (100)