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Table 4 Number of pairs matched using guestimate probabilities (1995)

From: Investigating increased admissions to neonatal intensive care in England between 1995 and 2006: data linkage study using Hospital Episode Statistics

Cut off weight N pairs N EPICure % EPICure N HES % HES
15 2093 537 80.39 1846 0.38
16 1939 528 79.04 1726 0.35
17 792 365 54.64 692 0.14
18 467 302 45.21 401 0.08
19 435 285 42.66 380 0.08
20 335 256 38.32 294 0.06
21 270 216 32.34 237 0.05
22 229 200 29.94 208 0.04
23 202 182 27.25 193 0.04
24 175 166 24.85 167 0.03
25 158 150 22.46 152 0.03
26 145 138 20.66 142 0.03
27 140 133 19.91 137 0.03
28 112 110 16.47 109 0.02
29 97 96 14.37 96 0.02
30 86 86 12.87 86 0.02
31 67 67 10.03 67 0.01
32 50 50 7.49 50 0.01
34 47 47 7.04 47 0.01
35 41 41 6.14 41 0.01
37 31 31 4.64 31 0.01
38 26 26 3.89 26 0.01
39 9 9 1.35 9 0.00
40 4 4 0.60 4 0.00
42 2 2 0.30 2 0.00
43 0 0 0.00 0 0.00
  1. Table of the number of pairs in 1995 matched from each data set for differing cutoffs in the value of the weight calculated by the Fellegi-Sunter (guestimate) method of data linkage