whether bp readings are valid
| Value label | Value | Absolute frequency | Relative frequency |
|---|---|---|---|
| valid bp measurement | 1 | 16846.00 | 81.39% |
| ate, drank, smoked, exercised in previous half hour | 2 | 3452.00 | 16.68% |
| three valid readings not obtained | 4 | 136.00 | 0.66% |
| refused, not obtained, not attempted | 6 | 265.00 | 1.28% |
| Total | 20699.00 | 100.00% |
