Table 2.

Study purposes classified according to major themes based on modified “taxonomy of data use” theme.

Theme	Number	%
Medical research studies	224	35.2
Environmental and public health studies	106	16.7
Administrative and other study purposes	84	13.2
ICD ascertainment/coding quality	74	11.6
Patient safety, including risk prediction	45	7.1
Mortality only studies	37	5.8
Quality of care	34	5.3
Health economics	21	3.3
Clinical or practice guidelines	11	1.7
Total	636	100.0

ICD: International Classification of Diseases.