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Table 1 Rasch model individual item fit

From: The validity of a professional competence tool for physiotherapy students in simulation-based clinical education: a Rasch analysis

One week

Two week

Short-form

Clinical Placement

Item

Measure

Infit

(mnsq)

Outfit

(mnsq)

Number of responses (n)

Item

Measure

Infit

(mnsq)

Outfit

(mnsq)

Number of responses (n)

Item

Measure

Infit

(mnsq)

Outfit

(mnsq)

Number of responses (n)

Item

Measure

Infit

(mnsq)

Outfit

(mnsq)

Number of responses (n)

18

2.13

.85

.98

114

18

2.27

.71

.63

156

18

1.65

1.59

1.51

28

17

1.44

.82

.78

289

8

1.13

1.17

1.46

147

17

1.73

.72

.65

181

12

1.05

1.39

1.38

189

12

1.40

.94

.93

289

12

1.13

1.06

1.11

147

12

1.52

.79

.82

172

17

.98

.89

.85

291

10

1.17

.92

.88

288

6

1.00

.99

.90

147

10

1.42

.96

.85

179

16

.92

1.01

.98

523

18

1.14

.90

.88

280

10

.82

.75

.61

147

8

1.35

.73

.70

180

14

.88

1.11

1.10

532

11

1.09

.82

.78

289

9

.77

.47

.39

147

11

1.28

.79

.77

177

15

.49

.98

.96

532

13

.95

.87

.84

289

16

.73

1.05

.89

147

19

.94

1.05

1.09

178

10

.43

.83

.84

554

8

.76

.80

.74

289

11

.64

.73

.74

147

9

.89

.66

.63

180

7

.42

1.04

1.00

557

19

.67

.92

.89

289

17

.64

.45

.33

147

6

.78

1.07

1.18

178

11

.40

.89

.94

514

16

.51

1.02

.99

288

13

.42

.54

.54

147

16

.69

1.02

1.14

181

9

.35

.91

.90

607

9

.43

.75

.72

289

20

.31

.99

1.01

147

13

.55

.66

.66

180

19

.16

.68

.64

271

15

.13

1.03

1.00

289

7

.30

.78

.86

147

14

.38

.83

.82

180

13

.13

.85

.83

406

7

.05

.93

.93

289

14

.30

.42

.41

147

7

.08

.96

.96

181

20

-.02

.95

.97

534

14

.03

.67

.65

289

19

.09

1.60

1.54

147

15

-.03

1.06

1.12

181

8

-.10

.80

.79

507

20

.02

.96

.99

287

15

-.44

1.27

1.58

147

20

-.80

1.03

.97

181

5

-.15

1.13

1.07

601

5

-.56

1.26

1.29

289

5

−1.27

1.41

1.58

147

5

−1.41

1.22

1.33

181

4

-.43

1.36

1.38

343

6

-.62

1.20

1.20

289

3

−1.99

1.06

1.09

147

4

−2.68

1.31

1.34

181

3

−1.19

1.15

1.02

305

4

−1.43

1.26

1.29

288

4

−2.09

1.37

1.49

147

3

−2.75

1.00

1.00

181

2

−1.35

.81

.76

285

2

−2.02

1.36

1.43

289

1

−2.31

.96

.89

147

2

−2.99

1.86

1.86

181

1

−1.45

1.17

1.13

641

3

−2.30

1.32

1.34

289

2

−2.31

.96

.89

147

1

−3.19

1.03

1.04

181

6

−3.15

1.83

1.58

11

1

−2.86

1.30

1.28

289

  1. Key: The four simulation assessment formats are presented individually. One week and Two week represent the longitudinal simulation assessment formats that were undertaken after one and two weeks of time spent in simulation respectively. Short-form assessments were those undertaken in a single 25 min exam in simulation. Clinical placement represents longitudinal assessments undertaken after a completed clinical placement in a hospital or clinic setting. Items are listed from most to least difficult for each separate assessment format. The measure score places each item along a hierarchy of difficulty. The infit and outfit scores are presented in mean-squares (mnsq) and indicate a wellness of fit of an individual item to the Rasch model. The number of times each item was scored by an educator in each format is also displayed as number of responses ‘n