From: Rasch fit statistics and sample size considerations for polytomous data
HADS A | Infit t | Infit t | Infit MNSQ | Infit MNSQ | Infit MNSQ | Outfit t | Outfit t | Outfit MNSQ | Outfit MNSQ | Outfit MNSQ |
---|---|---|---|---|---|---|---|---|---|---|
<-2 | >2 | <0.7 | >1.2 | >1.3 | <-2 | >2 | <0.7 | >1.2 | >1.3 | |
25 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 |
50 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 |
100 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 |
200 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 |
400 | 2 | 1 | 0 | 1 | 1 | 2 | 1 | 0 | 1 | 1 |
800 | 3 | 1 | 0 | 1 | 1 | 3 | 1 | 0 | 1 | 1 |
1600 | 3 | 2 | 0 | 1 | 1 | 3 | 2 | 0 | 1 | 1 |
3200 | 4 | 2 | 0 | 1 | 1 | 4 | 2 | 0 | 1 | 1 |
HADS D | Infit t | Infit t | Infit MNSQ | Infit MNSQ | Infit MNSQ | Outfit t | Outfit t | Outfit MNSQ | Outfit MNSQ | Outfit MNSQ |
<-2 | >2 | <0.7 | >1.2 | >1.3 | >2 | <-2 | <0.7 | >1.2 | >1.3 | |
25 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 2 | 2 |
50 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 1 | 1 | 1 |
100 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 2 | 2 |
200 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
400 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
800 | 1 | 1 | 0 | 0 | 0 | 2 | 1 | 1 | 1 | 1 |
1600 | 2 | 3 | 0 | 0 | 0 | 2 | 2 | 1 | 2 | 1 |
3200 | 3 | 3 | 0 | 0 | 0 | 3 | 3 | 1 | 2 | 1 |