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. Author manuscript; available in PMC: 2008 Feb 8.
Published in final edited form as: Inquiry. 2006;43(2):150–159. doi: 10.5034/inquiryjrnl_43.2.150

Table 2.

Summary statistics

Mean S.D.a Minimum Maximum
Registrations 59 64 1 634
Performance
 Actual graft survival rate .89 .07 .37 1.00
 Actual minus expected graft survival rate .00 .06 -.52 .18
 Observed ÷ expected graft failure rate 1.02 .58 .00 5.84
 Z-score -.10 1.61 -20.69 4.44
Number of registrants, 0 to 100 miles 262 246 3 1,337
Number of registrants, 100 to 200 miles 133 136 0 1,009
a

S.D. = standard deviation.