Table 3.
Median values for the SDI outcomes for the 59 patients that had both SDI and actigraphy data, all of which had non-normal distributions.
| SDI outcome (possible min-max score) | Median | 25th percentile | 75th percentile | Min-max | 95% CI of median* |
|---|---|---|---|---|---|
| SDI average total (0–12) | 0.06 | 0.00 | 1.84 | 0.00–6.12 | 0.04–0.57 |
| SDI summed product (0–84) | 3.00 | 0.00 | 18.00 | 0–60 | 2.00–9.00 |
| SDI summed frequency (0–28) | 3.00 | 0.00 | 11.00 | 0–22 | 2.00–7.00 |
| SDI mean frequency (0–4) | 0.43 | 0.00 | 1.57 | 0–3 | 0.29–1.00 |
| SDI mean severity (0–3) | 0.14 | 0.00 | 0.86 | 0–2 | 0.14–0.57 |
| SDI mean distress (0–5) | 0.29 | 0.00 | 1.43 | 0–4 | 0.00–0.86 |
SDI, Sleep Disorder Inventory.
*
CI for medians were calculated with the Ratio Statistic in SPSS, which provide varying coverage, but always more than 95%.