There was no difference in survival between Groups A and B (X2 = 0.65, P >0.4), or between Groups C and D (X2 = 0.08, P>0.7). Nevertheless the x2 values for both heterogeneity and trend are highly significant (Table V).
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There was no difference in survival between Groups A and B (X2 = 0.65, P >0.4), or between Groups C and D (X2 = 0.08, P>0.7). Nevertheless the x2 values for both heterogeneity and trend are highly significant (Table V).