Skip to main content

Advertisement

Table 1 Summary of literature describing the accuracy of diagnostic codes for SAH

From: The Ottawa SAH search algorithms: protocol for a multi- centre validation study of primary subarachnoid hemorrhage prediction models using health administrative data (the SAHepi prediction study protocol)

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)
  1. CI confidence interval, NR not reported, PPV positive predictive value, Sens sensitivity, Spec Specificity