Table 2.
Two-item version of Sleep Condition Indicator (SCI-2) sex-and age-related reference values, N = 190 000
| Age group, years | Sex | N | Mean (SD) | Median (IQR) |
|---|---|---|---|---|
| 16–25 | F | 17 526 | 2.76 (2.24) | 2 (1–4) |
| M | 14 450 | 3.19 )2.33) | 3 (1–5) | |
|
| ||||
| 26–35 | F | 26 509 | 2.95 (2.28) | 3 (1–5) |
| M | 25 833 | 3.35 (2.31) | 3 (1–5) | |
|
| ||||
| 36–45 | F | 19 342 | 2.38 (2.16) | 2 (1–4) |
| M | 17 748 | 2.85 (2.24) | 2 (1–4) | |
|
| ||||
| 46–55 | F | 21 123 | 2.01 (2.01) | 2 (0–3) |
| M | 13 431 | 2.42 (2.16) | 2 (1–3) | |
|
| ||||
| 56–65 | F | 15 689 | 1.86 (1.92) | 1 (0–3) |
| M | 8868 | 2.22 (2.06) | 2 (1–3) | |
|
| ||||
| 66–75 | F | 5650 | 1.46 (1.63) | 1 (0–2) |
| M | 3831 | 1.75 (1.75) | 1 (0–2) | |
|
| ||||
| All ages | F | 105 839 | 2.39 (2.17) | 2 (1–4) |
| M | 84 161 | 2.88 (2.28) | 2 (1–4) | |
|
| ||||
| All | 190 000 | 2.60 (2.23) | 2 (1–4) | |
F = female. IQR = interquartile range. M = male. SD = standard deviation. Range SCI 0–8 with 8 indicating better sleep.