Item

Parameter estimate

Frequency, %

Fit

Expected

Observed

a 1

b 1

a 2

b 2

π 00

π 01

π 11

π 00

π 01

π 11

χ ( 2 ) 2

p-value

33

1.81

−0.42

0.77

−3.51

3.4

3.9

92.7

3.5

4.3

92.2

5.40

0.0673

34

1.43

−0.87

0.43

−2.12

8.9

20.1

71

9.2

20.0

70.8

1.49

0.4751

40

1.43

−0.85

0.30

1.51

18.1

42.8

39.1

18.2

42.6

39.2

0.22

0.8957

41

1.60

−0.62

0.58

−2.52

7.5

12.3

80.2

7.9

12.4

79.7

2.81

0.2450

42

1.34

−1.01

0.37

1.11

16.1

43.9

40

16.6

43.3

40.1

2.87

0.2378

43

1.48

−0.63

0.42

−1.07

14.1

25.1

60.8

14.6

24.8

60.6

2.55

0.2790

44

1.09

−1.52

0.36

3.87

16

63.6

20.4

16.7

62.7

20.6

4.78

0.0915

46

1.78

−0.72

0.45

−3.27

6.5

12.9

80.6

6.5

13.1

80.4

0.64

0.7249

47

1.88

−0.11

0.66

−2.52

9.2

7.9

82.9

9.9

7.7

82.3

6.20

0.0449

48

1.95

−0.04

0.63

−1.36

16.8

13.9

69.3

17.2

13.9

68.8

1.45

0.4831

49

1.64

−0.12

0.52

0.74

29.1

30

40.8

29.8

29.3

41.0

3.71

0.1564

50

1.24

−1.34

0.23

2.75

13.8

51.3

35

15.0

50.0

35.0

13.78

0.0010

51

1.60

−0.82

0.36

−0.73

13

30.6

56.4

13.3

30.4

56.4

0.75

0.6859

61

1.94

0.46

0.78

−0.98

23

10.1

66.9

24.0

9.6

66.3

7.71

0.0211

68

1.67

0.16

0.67

−0.57

24.4

16.8

58.9

25.7

15.7

58.6

14.35

0.0008

80

1.38

−0.30

0.42

2.81

33

43.1

23.9

33.7

42.2

24.1

3.34

0.1878

85

1.46

−0.46

0.64

−1.44

12.5

17

70.5

13.1

16.9

70.0

3.67

0.1595

95

2.67

0.73

1.02

0.94

53.4

16.3

30.3

54.4

14.4

31.2

31.10

0.0000

96

2.54

0.81

1.13

0.63

50.8

13.8

35.4

52.5

11.3

36.2

69.79

0.0000

105

1.64

−0.22

0.56

−1.15

16.9

18.2

64.9

17.3

18.1

64.6

1.09

0.5787

106

2.43

0.67

0.87

−0.35

33

10.2

56.8

33.8

9.8

56.5

4.45

0.1081

109

1.96

−0.48

0.64

−3.63

4.2

5.5

90.3

4.4

5.8

89.8

2.34

0.3106

110

1.81

−0.04

0.87

−1.74

11.6

8.6

79.8

12.3

8.8

78.8

6.34

0.0420

112

1.94

−0.56

0.55

−2.02

9.8

15.9

74.3

9.8

16.3

73.9

1.19

0.5513

113

1.89

−0.31

1.04

−3.05

2.9

2.5

94.6

3.0

3.2

93.9

13.88

0.0010

116

2.01

−0.07

0.80

−0.99

17.9

14.7

67.4

18.8

14.5

66.8

5.81

0.0548

117

1.96

0.10

0.73

0.20

30.7

22.6

46.7

31.8

21.5

46.7

9.94

0.0070