Comparison of the difference between self reported and recorded utilisation (DSR) and the logarithm of the ratio between self reported and recorded utilisation (ln SU/RU) in the four recall periods
| Mean | SD | Min | Median | Max | %(U)3-a | %(A)b | %(O)c | |
|---|---|---|---|---|---|---|---|---|
| DSR | ||||||||
| 2 weeks | 0.144 | 0.601 | −2 | 0 | 3 | 7.1 | 73.7 | 19.2 |
| 3 months | 0.193 | 1.519 | −6 | 0 | 8 | 23.3 | 44.1 | 32.6 |
| 6 months | 0.370 | 2.583 | −14 | 0 | 17 | 29.7 | 29.9 | 40.4 |
| 12 months | 0.102 | 4.864 | −28 | 0 | 28 | 37.9 | 17.5 | 44.6 |
| Mean | SD | Min | Median | Max | %(U)d | %(A)e | %(O)f | |
| log(SU/RU) | ||||||||
| 2 weeks | 0.678 | 3.140 | −7.6 | 0 | 8.0 | 5.9 | 78.7 | 15.4 |
| 3 months | 0.648 | 3.491 | −8.0 | 0 | 8.3 | 10.0 | 70.1 | 19.9 |
| 6 months | 0.722 | 3.519 | −8.8 | 0 | 8.7 | 11.5 | 68.0 | 20.5 |
| 12 months | 0.377 | 2.868 | −9.3 | 0 | 9.4 | 11.2 | 73.0 | 15.8 |
↵3-a : %(U): Proportion of underreporters: DSR <0.b: %(A): Proportion of accurate reporters: DSR = 0.c: %(O): Proportion of overreporters: DSR >0.d: %(U): Proportion of underreporters: ln(SU/RU) <−1.e: %(A): Proportion of accurate reporters: −1> ln(SU/RU) <+1. f: %(O): Proportion of overreporters: ln(SU/RU) >+1.