Table 2 Confirmed fractures, positive predictive value (PPV) and 95% confidence interval (CI) in a validation study of the Swedish National Patient Register with regards to ICD-10 code registrations of distal radius fractures
From: Validity of distal radius fracture diagnoses in the Swedish National Patient Register
Confirmed distal radius fracture (with or without distal ulna fracture) | S52.5 Distal radius fracture only | S52.6 Fracture of distal radius and distal ulna (defined as metaphyseal fracture) | Missing | No distal radius fracture | |
|---|---|---|---|---|---|
PPV (95% CI) | PPV (95% CI) | PPV (95% CI) | Number | Number | |
Outpatient register | |||||
Cohort 1, S52.5 | 97% (94–99) | 94% (90–96) | 3% (1.5–6.5) | 1 | 8 |
Cohort 2, S52.6 | 92% (88–95) | 57% (51–64) | 35% (29–41) | 2 | 19 |
Cohort 3, surgery | 100% (99–100) | 95% (91–97) | 5% (3–9) | 2 | 0 |
Inpatient register | |||||
Cohort 4, S52.5 | 98% (95–99) | 93% (88–96) | 5% (3–9) | 1 | 5 |
Cohort 5, S52.6 | 95% (92–98) | 32% (26–38) | 63% (57–69) | 0 | 11 |
Cohort 6, surgery | 96% (93–98) | 79% (74–84) | 17% (12–22) | 4 | 9 |