Table 2.

Cross-tabulation of timing of first nephrologist consultation: Medical Evidence Report versus claims data

Medical Evidence ReportFirst Outpatient Nephrology Consultation (κ=0.29)First Nephrologist Consultation (Any) (κ=0.15)Total
ClaimClaim
None0–6 mo6–12 mo>12 moNone0–6 mo6–12 mo>12 mo
None16,335383312494222406213,7242050580325,639
 (row %)0.640.150.050.160.160.540.080.230.32
 (column %)0.610.330.170.120.460.570.230.15
0–6 mo2457216510394616101629341206512110,277
0.240.210.100.450.090.290.120.500.13
0.090.190.140.130.110.120.140.13
6–12 mo4689412632138734190553763638984320,762
0.230.200.150.420.090.260.180.470.26
0.170.350.440.250.210.220.410.26
>12 mo 34321473184317,08319312127188917,88423,831
0.140.060.080.720.080.090.080.750.29
0.130.130.250.490.220.090.220.46
Total26,91311,597734434,655891424,161878338,65180,509
0.330.140.090.430.110.300.110.48