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Table 4 Haplotype frequencies of the ADRB2 promoter and coding block SNPs (Haplotype genotypes with less than 2 % frequency were not shown in the table)

From: β2-Adrenergic receptor promoter haplotype influences the severity of acute viral respiratory tract infection during infancy: a prospective cohort study

  Caucasians African Americans P value
(N = 261) (N = 113)
Promoter haplotype
CCA 42.77 44.86 0.636
TTG 56.20 53.74  
Coding block haplotype
AC 37.40 50.47 0.622
GC 19.01 28.97  
GG 43.18 20.56  
Combined haplotype
CCAGG 41.32 20.56 <.001
TTGAC 35.33 25.70  
TTGGC 19.63 28.04  
CCAAC 1.24 23.83