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Table 1 Comparison of early and late groups

From: Are component positioning and prosthesis size associated with hip resurfacing failure?

     correlation between precision and experience
  Early group (n = 100) Late group (n = 261) p-value coefficient p value
Mean anteroposterior stem-shaft angle in degrees (range) 2 (-20 to 28) 1 (-24 to 25) 0.107 0.64 < 0.001
Standard deviation of anteroposterior stem shaft angle in degrees 7 5 0.012   
Mean lateral stem-shaft angle in degrees (range) 2 (-18 to 18) 3 (-19 to 25) 0.091 0.37 < 0.001
Standard deviation of lateral stem shaft angle in degrees 7 6 0.595   
Mean acetabular cup inclination angle in degrees (range) 35 (14 to 54) 37 (18 to 65) 0.036 0.12 0.027
Standard deviation of acetabular cup inclination angle in degrees 8 7 0.275   
  1. NB: negative values indicate varus positioning in the anteroposterior plane, and anteversion in the lateral plane