Table 4 Number of items belonging to a sleep aspect per instrument
From: Test equating sleep scales: applying the Leunbach’s model
Instrument | Sleep disturbance | Quality of sleep | Amount of sleep | Impact of sleep on daily life | Facilitators/ barriers of sleep |
|---|---|---|---|---|---|
ESS | 8 | ||||
MOS | 3 | 2 | 1 | ||
NSID | 16 | ||||
NSIN | 4 | 9 | 2 | ||
NSIF | 3 | 1 | |||
PSQI | 9 | 1 | 2 | 2 | |
PSD | 18 | 8 | 1 | ||
PSRI | 4 | 12 | |||
Total number of instruments | 4 | 1 | 3 |