PFILE= person output file

PFILE=filename produces an output file containing the information for each person. This file contains 4 heading lines (unless HLINES=N), followed by one line for each person containing the following fields and the standard field selection. To change the output-field selection, go to the Output File dialog, PFILE=, Field selection, Make default, or POFSFIELDS=.

 

PFILE=? opens a Browse window

 

"Status=-2 to -6" means that there are no measurable responses by those persons in this analysis. The persons may be listed in the PFILE= and in Table 18, but all the numbers shown are default values. They have no meaning. Please do not include those persons in summary statistics.

 

Columns:

with 'Select All" fields using Output File Field Selection

Start

End

Label

Format

Description

1

1

 

A1

Blank or ";" if HLINES=Y and there are no responses or deleted or extreme (status =0,-1, -2, -3)

2

6

ENTRY

I5

1. The person sequence entry number

7

14

MEASURE

F8.2

2. MLE person ability estimate user-rescaled by UMEAN=, USCALE=, UDECIM=

15

17

STATUS

I3

3. The person's status

2 = Anchored (fixed) measure

1 = Estimated measure

0 = Extreme maximum measure (estimated using EXTRSC=) for extreme maximum raw score

-1 = Extreme minimum measure (estimated using EXTRSC=) for extreme minimum raw score (usually 0)

-2 = No responses available for measure

-3 = Deleted by user

-4 = Inestimable: high (all responses in the same category with ISGROUPS=0 or CUTHI=)

-5 = Inestimable: low (all responses in the same category with ISGROUPS=0 or CUTLO=)

-6 = Anchored (fixed) measure with extreme (minimum or maximum) observed raw score

-7 to -16 = Temporarily deselected by Specification box with PSELECT= (usual STATUS - 10)

-17 to -26 = Temporarily deleted by Specification box with PDELETE= (usual STATUS - 20)

-27 to -36 = Temporarily deselected and deleted by Specification box with PSELECT= and PDELETE= (usual STATUS - 30)

18

25

COUNT

F8.1

4. The number of responses used in calibrating  (TOTAL=N), or the observed count (TOTAL=Y)

26

34

SCORE

F9.1

5. The raw score used in calibrating (TOTAL=N) or the observed score (TOTAL=Y)

35

41

MODLSE

REALSE

F7.2

6. Standard error of the MLE or WLE person ability estimate adjusted by REALSE= and user-rescaled by USCALE=, UDECIM=

42

48

IN.MSQ

F7.2

7. Person infit: mean square infit

49

55

ZSTD, ZEMP, LOG

F7.2

8. Person infit: t standardized, locally t standardized, or log-scaled (LOCAL=)

56

62

OUT.MS

F7.2

9. Person outfit: mean square outfit

63

69

ZSTD, ZEMP, LOG

F7.2

10. Person outfit: t standardized, locally t standardized ,or log-scaled (LOCAL=)

70

76

DISPLACE

F7.2

11. Person displacement (user-rescaled by USCALE=, UDECIM=)

77

83

PTBS, PTMEAS

F7.2

12. Person by test-score correlation: point-biserial, or point-measure (PTBIS=). This is 0.00 if inestimable.

84

90

WEIGHT

F7.2

13. Person weight (PWEIGHT=)

91

96

OBSMA

F6.1

14. Observed percent of observations matching prediction

97

102

EXPMA

F6.1

15. Expected percent of observations matching prediction

103

108

PVALUE

F6.2

16. P-value: proportion correct or average rating (PVALUE=)

109

114

PME-E

F6.2

17. Expected value of Person by test-score correlation. This is 0.00 if inestimable.

115

120

RMSR

F6.2

18. RMSR: root-mean-square residual (RMSR=)

121

128

WMLE

F8.2

19. Warm's (Weighted) Mean Likelihood Estimate (WLE) of person Ability user-rescaled by UMEAN=, USCALE=, UDECIM=

129

129

 

1X

 Blank

130

159+

NAME

A30+

20. Person name: change NAME1= and NAMELENGTH= to alter this.

 

The format descriptors are:


In = Integer field width n columns


Fn.m = Numeric field, n columns wide including n-m-1 integral places, a decimal point and m decimal places


An = Alphabetic field, n columns wide


nX = n blank columns.

 

When CSV=Y, commas separate the values, which are squeezed together without spaces between. Quotation marks surround the "Person name", e.g., 1,2,3,4,"Name". When CSV=T, the commas are replaced by tab characters.

 

When W300=Yes, then this is produced in Winsteps 3.00, 1/1/2000, format:

 

Columns:


Start

End

Label

Format

Description

1

1

 

A1

Blank or ";" if HLINES=Y and there are no responses or deleted (status = -2, -3)

2

6

ENTRY

I5

1. The person sequence number

7

14

MEASURE

F8.2

2. Person's ability estimate (user-rescaled by UMEAN=, USCALE=, UDECIM)

15

17

STATUS

I3

3. The person's status:

3 = Anchored (fixed) measure with extreme (minimum or maximum) observed raw score

2 = Anchored (fixed) measure

1 = Estimated measure

0 = Extreme minimum (estimated using EXTRSC=)

-1 = Extreme maximum (estimated using EXTRSC=)

-2 = No responses available for measure

-3 = Deleted by user

-4 = Inestimable: high (all responses in the same category with ISGROUPS=0 or CUTHI=)

-5 = Inestimable: low (all responses in the same category with ISGROUPS=0 or CUTLO=)

-6 = Deselected

18

23

COUNT

I6

4. The number of responses used in measuring (TOTAL=N) or the observed count (TOTAL=Y)

24

30

SCORE

I6

5. The raw score used in calibrating (TOTAL=N) or the observed score (TOTAL=Y)

31

37

MODLSE

REALSE

F7.2

6. Person ability standard error adjusted by REALSE= and user-rescaled by USCALE=, UDECIM=

38

44

IN.MSQ

F7.2

7. Person mean square infit

45

51

ZSTD, ZEMP, LOG

F7.2

8. Person infit: t standardized, locally t standardized, or log-scaled (LOCAL=)

52

58

 

F7.2

9. Person mean square outfit (OUT.MS)

59

65

ZSTD, ZEMP, LOG

F7.2

10. Person outfit: t standardized, locally t standardized, or log-scaled (LOCAL=)

66

72

DISPLACE

F7.2

11. Person displacement (user-rescaled by USCALE=, UDECIM=)

73

79

PTBS, PTME

F7.2

12. Person by test-score correlation: point-biserial, or point-measure

80

80

 

1X

13. Blank

81

112+

NAME

A30+

14. Person name

 

Example of standard PFILE= (to see other fields: Output File dialog)

 

 

Example: You wish to write a file on disk called "STUDENT-PF.txt" containing the person statistics for import later into a student information database:

  PFILE=STUDENT-PF.txt


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Rasch Publications
Rasch Measurement Transactions (free, online) Rasch Measurement research papers (free, online) Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch Applying the Rasch Model 3rd. Ed., Bond & Fox Best Test Design, Wright & Stone
Rating Scale Analysis, Wright & Masters Introduction to Rasch Measurement, E. Smith & R. Smith Introduction to Many-Facet Rasch Measurement, Thomas Eckes Invariant Measurement: Using Rasch Models in the Social, Behavioral, and Health Sciences, George Engelhard, Jr. Statistical Analyses for Language Testers, Rita Green
Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar Journal of Applied Measurement Rasch models for measurement, David Andrich Constructing Measures, Mark Wilson Rasch Analysis in the Human Sciences, Boone, Stave, Yale
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