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Table 2 Statistical analysis of differences in survival times

From: Susceptibility to scrapie and disease phenotype in sheep: cross-PRNP genotype experimental transmissions with natural sources

  Survival Times AAS to VVC to
  AA(4) AA+(6) VA(7) VV(7) VV(3) VA(3) AA(6) AA+(2)
679 ±54 1195±90 1934±275 1400±200 245±33 399±28 1544±294 2023±303
AAS to          
AA(4) 679±54         
AA+(6) 1195±90 **        
VA(7) 1934±275 ** **       
VV(7) 1400±200 ** * **      
VVC to          
VV(3) 245±33 n/a * * *     
VA(3) 399±28 n/a * * * n/a    
AA(6) 1544±294 ** ** * ns * *   
AA+(2) 2023±303 n/a n/a n/a n/a n/a n/a n/a  
  1. AA+, sheep with additional polymorphisms at codons 112 or 141. Survival times are indicated as mean ± SD. In brackets, numer of clinically affected sheep within each transmission group. n/a, analysis not performed due to insufficient sheep numbers. Ns, no significant differences; * P < 0.05; ** P < 0.01 in the Mann–Whitney test.