Table 3.
Diagnostic Performances of Single D-PSG Parameters
| Single positive variable | NT1 | Non-NT1 | Sensitivity, % (95% CI) | Specificity, % (95% CI) | Positive likelihood ratio | Negative likelihood ratio | ||
| Pos | Neg | Pos | Neg | |||||
| Group 1 (n = 133) | n = 79 | n = 54 | ||||||
| dn-NAP ≥2 | 62 | 17 | 15 | 39 | 78 (68–87) | 72 (58–84) | 2.83 | 0.30 |
| d-TST >60 min | 75 | 4 | 30 | 24 | 95 (88–99) | 44 (31–59) | 1.71 | 0.11 |
| d-SOREMP ≥1 | 71 | 8 | 7 | 47 | 90 (81–96) | 87 (75–95) | 6.93 | 0.12 |
| d-SOREMP ≥2 | 42 | 37 | 1 | 53 | 53 (42–64) | 98 (90–100) | 28.71 | 0.48 |
| Group 2 (n = 67) | n = 33 | n = 34 | ||||||
| dn-NAP ≥2 | 25 | 8 | 12 | 22 | 76 (58–89) | 65 (46–80) | 2.15 | 0.37 |
| d-TST >60 min | 28 | 5 | 19 | 15 | 85 (68–95) | 44 (27–62) | 1.52 | 0.34 |
| d-SOREMP ≥1 | 27 | 6 | 5 | 29 | 82 (65–93) | 85 (69–95) | 5.56 | 0.21 |
| d-SOREMP ≥2 | 33 | 10 | 1 | 33 | 77 (61–88) | 97 (85–100) | 26.09 | 0.24 |
Abbreviations: d = daytime; dn-NAP = number of daytime naps; D-PSG = daytime polysomnography; non-NT1 = non-narcolepsy type 1; NT1 = narcolepsy type 1; SOREMP = sleep-onset REM period; TST = total sleep time.