Research Article
The Hierarchies of Multivalued Attribute Domains and Corresponding Applications in Data Mining
| Category | Systolic(mmHg) | Diastolic(mmHg) |
| Normal value | 120 | 80 | Normal high value | 120 ~139 | 80 ~89 |
| High blood pressure | 140 | 90 | (Hypertension) stage 1 | 140 ~159 | 90 ~99 | (Hypertension) stage 2 | 160 ~179 | 100 ~109 | (Hypertension) stage 3 | 180 | 110 |
| Simple systolic hypertension | 140 | 89 |
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