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Table 4 The goodness-of-fit of the 1-PL and 2-PL models to real data by year and period

From: Item pre-knowledge true prevalence in clinical anatomy - application of gated item response theory model

Year

Period

Model

Log-Lik

AICa

BICa

CHulla

2008

1

1-PL

− 12685.50

25573.09

25914.46

23.58

2-PL

− 12536.60

25473.24

26149.22

1.09

2

1-PL

− 6707.50

13617.01

13901.04

17.02

2-PL

− 6592.09

13584.17

14146.61

1.13

2009

1

1-PL

− 10729.40

21660.88

21997.97

22.49

2-PL

− 10619.00

21637.89

22305.40

0.97

2

1-PL

− 5862.56

11927.13

12202.59

8.81

2-PL

− 5774.92

11949.85

12495.32

0.81

2010

1

1-PL

− 10321.70

20845.34

21174.34

29.82

2-PL

− 10207.60

20815.13

21466.62

1.11

2

1-PL

− 6499.01

13200.01

13478.12

18.40

2-PL

− 6403.77

13207.53

13758.25

1.05

2011

1

1-PL

− 12838.10

25878.19

26230.99

10.10

2-PL

− 12629.10

25658.23

26356.84

2.27

2

1-PL

− 2687.06

5576.12

5765.11

5.34

2-PL

− 2614.77

5629.54

6003.78

0.84

  1. aBold values identifies the best model according to each criterion