whether waist measurements are valid
| Value label | Value | Absolute frequency | Relative frequency |
|---|---|---|---|
| usable 1st & 2nd measurement | 1 | 20280.00 | 97.98% |
| usable 1st & 3rd measurement | 2 | 1.00 | 0.00% |
| usable 1st & 2nd & 3rd measurement | 4 | 13.00 | 0.06% |
| not usable: unreliable | 5 | 38.00 | 0.18% |
| not usable: difference >3cm | 6 | 3.00 | 0.01% |
| partial response | 7 | 19.00 | 0.09% |
| not attempted | 9 | 345.00 | 1.67% |
| Total | 20699.00 | 100.00% |
