Study characteristics and test measures of studies for physician claims data and hospital discharge data
| Country | Study years | Author(reference) | Reference | Type of administrative data | Diabetes case definition | ICD codes used | Study, N | Sensitivity % (95% CI) | Specificity % (95% CI) | PPV % (95% CI) | NPV % (95% CI) | κ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canada | 1992–1999 | Hux et al21 | Medical chart | Physician claims and hospital discharge data | One physician service claims or one hospitalisation with diagnosis of diabetes | ICD-9 250.x | 3317 | 91 | 92* | 61 | 99* | |
| Two physician service claims or one hospitalisation with diagnosis of diabetes | ICD-9 250.x | 86 | 97* | 80 | 98* | |||||||
| Canada | 2000–2002 | Chen et al25 | Medical chart | Physician claims and hospital discharge data | 3 years observation perioddata | ICD 9 250.xx, ICD 10 E10.x-14.x | 3362 | 95.6 (92.5 to 97.7) | 92.8 (91.9 to 93.7) | 54 (49.6 to 58.5) | 99.6 (99.4 to 99.8) | 0.65 (0.61 to 0.69) |
| 2 years observation period data | ICD 9 250.xx, ICD 10 E10.x-14.x | 86.4 (82.4 to 90.5) | 97.1 (96.5 to 97.7) | 72.4 (67.5 to 77.3) | 98.8 (98.4 to 99.2) | 0.77 (0.73 to 0.81) | ||||||
| Physician claims | 3 years observation period data | ICD 9 250.xx, ICD 10 E10.x-14.x | 91.2 (87.9 to 94.6) | 97.6 (97.1 to 98.1) | 72.1 (67.5 to 76.9) | 99.2 (98.9 to 99.5) | 0.82 (0.78 to 0.85) | |||||
| 2 years observation period data | ICD 9 250.xx, ICD 10 E10.x-14.x | 76.6 (71.5 to 81.6) | 99.3 (99.0 to 99.6) | 90.9 (87.2 to 94.6) | 98 (97.5 to 98.4) | 0.82 (78.0 to 85.5) | ||||||
| USA | 1999 | Rector et al17 | Telephone surveys | Hospital discharge data and physician claims | One 1999 claim with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 3633 | 90 | 93 | |||
| One 1999 face-to-face encounter claim with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 82 | 96 | |||||||||
| One 1999 face-to-face encounter claim with primary dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 72 | 98 | |||||||||
| Two 1999 claims with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 85 | 96 | |||||||||
| Two 1999 face-to-face encounter claims with primary dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 70 | 98 | |||||||||
| Two 1999 face-to-face encounter claims with primary dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 57 | 99 | |||||||||
| 1999–2000 | One 1999 or 2000 claim with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41) | 95 | 88 | ||||||||
| One 1999 or 2000 face-to-face encounter claim with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 94 | 92 | |||||||||
| One 1999 or 2000 face-to-face encounter claim with primary dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 87 | 96 | |||||||||
| Two 1999 or 2000 claims with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 93 | 93 | |||||||||
| Two 1999 or 2000 face-to-face encounter claims with dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 91 | 95 | |||||||||
| Two 1999 or 2000 face-to-face encounter claims with primary dx | ICD 9 250.xx, 357.2x, 362.0x, 366.41 | 77 | 98 | |||||||||
| Canada | 1980–1984 | Young et al27 | Self-reported survey | Hospital admission and physician claims | (Hospital admissions of provincial residents claims for which are submitted to the MHSC) AND (Hospital admissions of provincial residents claims for which are submitted to the MHSC AND Claims by the physician to the MHSC or payment) | ICD 9-CM | 1000 | 82.7 | 96.3 | |||
| (Hospital admissions of provincial residents claims for which are submitted to the MHSC AND Claims by the physician to the MHSC or payment) AND (Claims by the physician to the MHSC or payment) | ICD 9-CM | 82.1 | 98.5 | |||||||||
| (Hospital admissions of provincial residents claims for which are submitted to the MHSC) AND (Hospital admissions of provincial residents claims for which are submitted to the MHSC AND Claims by the physician to the MHSC or payment) AND (Claims by the physician to the MHSC or payment) | ICD 9-CM | 83.9 | 95.8 |
Superior performance characteristics within studies have been highlighted in bold.
*Sensitivity, specificity, PPV and NPV are all hand-calculated:
sensitivity identifies the proportion of patients who truly do have the disease/condition;
specificity identifies the proportion of patients who truly do not have the disease/condition;
PPV is the probability that participants with a positive screening test truly have the disease/condition;
NPV is the probability that participants with a negative screening test truly do not have the disease/condition;
κ is an inter-rater agreement statistic to evaluate the agreement between two classifications on ordinal or nominal scales.
ICD 10-AM, International Classification of Diseases, Tenth Revision, Australian Modification; ICD, International Classification of Diseases; ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; MHSC, Manitoba Health Services Commission; NPV, negative predictive value; PPV, positive predictive value.