Table 1.
Evolution of the total and item-per-item score at the NSS.
| Nov. 2016, Age 21 | Feb. 2021, Age 26 | Aug. 2021, Age 26 | |
|---|---|---|---|
| NSS Total Score | 17 | 25 | 36 |
| Irresistible need to sleep during the day (Item 1) | Per month (3) | Per week (4) | Per day (5) |
| Worried about falling asleep during the day (Item 2) | Not worried at all (0) | Worried (2) | Not very Worried (1) |
| Disruption of work/activities caused by daytime sleep attacks (Item 3) | Not important at all (0) | Moderately important (1) | Moderately important (1) |
| Disruption of social and family life by daytime sleep attacks (Item 4) | Not important at all (0) | Moderately important (1) | Moderately important (1) |
| Feeling after one of such daytime sleep attacks (Item 5) | Tired (1) | Tired (1) | Tired (1) |
| Time passed before the next episode of daytime sleep attack (Item 6) | No irresistible sleep attack (0) | No irresistible sleep attack (0) | Less than 1 hour (4) |
| Impact of daytime sleep episodes on the ability to drive a car (Item 7) | Not at all (0) | Not too much (1) | Not too much (1) |
| Frequency of generalized cataplexy episodes (Item 8) | Per month (3) | Per month (3) | Per day (5) |
| Frequency of partial cataplexy episodes (Item 9) | Per month (3) | Per week (4) | Per day (5) |
| Impact of cataplexy episodes on work, social or family life (Item 10) | Much (2) | Much (2) | Very much (3) |
| Frequency of hallucinations when falling asleep/waking up (Item 11) | Per month (3) | Not at all (0) | Per year (2) |
| Hallucination bothering (Item 12) | Not very bothered (1) | Not bothered at all (0) | Not bothered at all (0) |
| Frequency of sleep paralysis when falling asleep/waking up (Item 13) | Not at all (0) | Per week (4) | Per week (4) |
| Sleep paralysis bothering (Item 14) | Not bothered at all (0) | Not bothered at all (0) | Not very bothered (1) |
| Nighttime sleep disturbance (Item 15) | Not too much (1) | Much (2) | Much (2) |
NSS = Narcolepsy Severity Scale.