Table 3 Item level Rasch model location and fit statistics for the MISS scale, the four-item MISS and the MISS-R ^a

…difficulties falling asleep (1)

−0.049 (0.025)

− 0.576

0.381

…night awakening (2)

0.504 (0.026)

1.503

0.233

…not being rested by sleep (3)

−0.454 (0.023)

−1.579

0.490

…difficulties falling asleep (1)

0.050 (0.026)

1.898

0.947

…night awakening (2)

0.610 (0.027)

5.839

0.111

…not being rested by sleep (3)

−0.386 (0.024)

−4.103

0.470

… daytime disturbance (4)

−0.274 (0.025)

−6.571

0.014 ^e

…difficulties falling asleep (1)

−0.077 (0.026)

−1.395

0.422

…night awakening (2)

0.486 (0.026)

2.133

0.153

… daytime disturbance (4)

−0.409 (0.024)

−2.043

0.179