Table 1 Summary of literature describing the accuracy of diagnostic codes for SAH
Study | Total sample size | Number with ICD code(s) for SAH | Proportion of those with code truly having SAH (PPV) | Diagnostic code sensitivity/specificity, % (95% CI) |
|---|---|---|---|---|
Liu L et al. (1993) [15] | 683 | 14 | 92.9% | Not examined |
Phillips SJ et al. (1993) [16] | 301 | 3 | 33% | Not examined |
Mayo N et al. (1993) [17] | 96 | 1 | 100% | Not examined |
Mayo N et al. (1993) [17] | 3197 | 247 | 94.7% | Not examined |
Leibson CL et al. (1994) [27] | 364 | 11 | 100% | Not examined |
Broderick J et al. (1998) [28] | Not stated | 14 | 64% | Not examined |
Rosamond WD et el. (1999) [29] | 1185 | 22 | 86% | Not examined |
Roumie CL et al. (1998) [30] | 231 | 2 | 100% | Not examined |
Tirschwell et al. (2002) [18] | 206 | 58 | 86% | Sens = 98 (90–100) Spec = 92 (84–96) |
Kokotailo RA et al. (2005) [31] | 461 (ICD-9)/256 (ICD-10) | 51/32 | 98% (90–99)/91% (77–98) | Not examined |
Jones SA et al. (2014) [19] | 4260 | 56 | 79% (66–88) | Sens = 93 (92–99) |