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Table 4 Numbers of CT scans per patient, by quintiles of Townsend deprivation scores.

From: Socio-economic variation in CT scanning in Northern England, 1990-2002

  Townsend Quintiles  
No. of scans 1
N (%)
2
N (%)
3
N (%)
4
N (%)
5
N (%)
Total
N (%)
1 1924 (62) 1921 (57) 2297 (57) 2640 (58) 2707 (60) 11489 (59)
2 730 (24) 857 (26) 1092 (27) 1211 (27) 1133 (25) 5023 (26)
3 129 (4.1) 170 (5.1) 184 (4.6) 190 (4.2) 201 (4.5) 874 (4.5)
4 133 (4.3) 198 (5.9) 194 (4.8) 221 (4.9) 209 (4.7) 955 (4.9)
5 48 (1.6) 38 (1.1) 56 (1.4) 53 (1.2) 57 (1.3) 252 (1.3)
6 42 (1.4) 56 (1.7) 63 (1.6) 64 (1.4) 54 (1.2) 279 (1.4)
7 15 (0.5) 23 (0.7) 26 (0.7) 30 (0.7) 13 (0.3) 107 (0.6)
8 20 (0.7) 25 (0.8) 26 (0.7) 32 (0.7) 40 (0.9) 143 (0.7)
9 6 (0.2) 5 (0.2) 10 (0.3) 10 (0.2) 11 (0.2) 42 (0.2)
10 11 (0.4) 14 (0.4) 12 (0.3) 21 (0.5) 21 (0.5) 79 (0.4)
11-20 21 (0.7) 37 (1.1) 44 (1.1) 53 (1.2) 35 (0.8) 190 (1.0)
> 20 12 (0.4) 9 (0.3) 9 (0.2) 13 (0.3) 9 (0.2) 52 (0.3)
Total 3091 3353 4013 4538 4490 19485
  1. P for association between quintile of deprivation and number of scans = 0.37