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Table 2 Overview item fit statistics of the APSPT with 25 items

From: The assessment of procedural skills in physiotherapy education: a measurement study using the Rasch model

Item ID

Item

Location Rasch measure

Location Score 0–100

Infit t

Outfit t

Infit MSQ

Outfit MSQ

P1

Plans procedure with regard to patient factors

0.75

38.73

−0.24

−0.37

0.95

0.92

P3

Adequate assessment is performed before the procedure

1.45

43.58

0.74

0.64

1.12

1.11

P4

Prepares patient appropriately

2.76

52.64

0.61

0.35

1.1

1.06

P5

Overall assessment preparation

1.34

42.81

−1.93

−2.07*

0.69

0.64

KD1

Shows knowledge of the procedure

1.39

43.16

−1.61

− 1.08

0.73

0.8

KD2

Shows knowledge of the steps of the procedure

1.79

45.93

−1.97

− 1.36

0.67

0.73

KD3

Identifies appropriate procedure

−0.55

29.73

−0.72

−0.17

0.86

0.73

KD4

Overall assessment knowledge

1.5

43.92

−2.85*

−2.52*

0.57

0.56

S1

Ensures other’s safety

2.34

49.74

1.47

1.07

1.29

1.26

S2

Ensures own safety

0.01

33.61

−0.06

0.2

0.97

1

S3

Overall assessment safety

−0.22

32.02

1.09

0.86

1.21

1.5

C1

Provides information about procedure

0.18

34.79

0.35

0.07

1.05

1

C2

Tells the patient to state if there is any pain or discomfort

3.16

55.41

1.37

1.46

1.3

1.48

C3

Communication during procedure

2.36

49.87

1.86

1.51

1.39

1.36

C4

Avoids jargon

2.19

48.7

0.91

0.13

1.19

0.85

C5

Asks if the patient has any questions

6.71

79.98

0.41

0.71

1.08

1.4

C6

Overall assessment communication

2.5

50.84

0.49

0.06

1.09

0.98

PE1

Appropriate hand and finger placement

1.54

44.2

1.38

1.38

1.25

1.31

PE2

Performs procedure correctly

2.31

49.53

−1.8

−1.51

0.69

0.71

PE4

Anticipates next step

1.25

42.19

−0.7

0.15

0.88

1.02

PE6

Appropriately adapts procedure to the patient

2.5

50.84

−1.48

−1.24

0.75

0.75

PE7

Overall assessment procedure execution

2.58

51.4

−3.39*

−3.03*

0.47*

0.41*

CF1

Appropriate patient positioning

2.41

50.22

0.1

−0.19

1.01

0.95

CF2

Responses to patient discomfort

1.97

47.18

−0.25

−0.37

0.94

0.88

CF4

Overall assessment comfort

1.99

47.31

−1.16

−1.06

0.78

0.73

  1. NB. *indicates items showing overfit; the locations using the Rasch measure are reported in logit units (log-odds); the Location score is a transformation of the logit units into a 0–100 score. Higher scores and logits indicate higher item difficulties. The following abbreviations were used for the Item IDs: P: Preparation, KD: Knowledge and decision-making, S: Safety, C: Communication, PE: Procedure execution, CF: Comfort
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Archives of Physiotherapy

ISSN: 2057-0082