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Get internal lookup table for the 27- or 21-item MCQ

Usage

get_lookup_table(items = 27)

Arguments

items

Number of MCQ items (27 or 21); the default returns the Kirby, Petry, & Bickel (1999) 27-item design.

Value

Data frame with the complete item design: questionid, magnitude, kindiff, k_rank, ss_amount, ll_amount, and delay (days)

Examples

get_lookup_table()
#>    questionid magnitude     kindiff  k_rank ss_amount ll_amount delay
#> 1          13         S 0.000158128 0.00016        34        35   186
#> 2           1         M 0.000158278 0.00016        54        55   117
#> 3           9         L 0.000158278 0.00016        78        80   162
#> 4          20         S 0.000399042 0.00040        28        30   179
#> 5           6         M 0.000398936 0.00040        47        50   160
#> 6          17         L 0.000398089 0.00040        80        85   157
#> 7          26         S 0.001002674 0.00100        22        25   136
#> 8          24         M 0.001001001 0.00100        54        60   111
#> 9          12         L 0.001003386 0.00100        67        75   119
#> 10         22         S 0.002500000 0.00250        25        30    80
#> 11         16         M 0.002522357 0.00250        49        60    89
#> 12         15         L 0.002548176 0.00250        69        85    91
#> 13          3         S 0.005958292 0.00600        19        25    53
#> 14         10         M 0.006048387 0.00600        40        55    62
#> 15          2         L 0.005961252 0.00600        55        75    61
#> 16         18         S 0.015804598 0.01600        24        35    29
#> 17         21         M 0.015686275 0.01600        34        50    30
#> 18         25         L 0.016049383 0.01600        54        80    30
#> 19          5         S 0.041353383 0.04100        14        25    19
#> 20         14         M 0.040564374 0.04100        27        50    21
#> 21         23         L 0.041463415 0.04100        41        75    20
#> 22          7         S 0.102564103 0.10000        15        35    13
#> 23          8         M 0.100000000 0.10000        25        60    14
#> 24         19         L 0.101731602 0.10000        33        80    14
#> 25         11         S 0.246753247 0.25000        11        30     7
#> 26         27         M 0.250000000 0.25000        20        55     7
#> 27          4         L 0.248847926 0.25000        31        85     7
get_lookup_table(items = 21)
#>    questionid magnitude kindiff k_rank ss_amount ll_amount delay
#> 1           4         S  0.0007      1        34        35    43
#> 2          15         M  0.0007      1        53        55    55
#> 3           7         L  0.0007      1        83        85    35
#> 4          20         S  0.0032      2        27        30    35
#> 5           9         M  0.0032      2        48        55    45
#> 6          12         L  0.0031      2        65        75    50
#> 7           8         S  0.0057      3        21        30    75
#> 8          16         M  0.0055      3        47        60    50
#> 9          14         S  0.0083      4        30        35    20
#> 10         10         M  0.0089      4        40        65    70
#> 11          3         L  0.0077      4        67        85    35
#> 12         18         L  0.0086      4        50        80    70
#> 13         11         S  0.0160      5        25        35    25
#> 14          2         M  0.0150      5        40        55    25
#> 15         19         L  0.0159      5        45        70    35
#> 16         21         S  0.0250      6        16        30    35
#> 17          6         M  0.0359      6        32        55    20
#> 18         17         L  0.0375      6        40        70    20
#> 19          5         S  0.1333      7        15        35    10
#> 20         13         M  0.1292      7        24        55    10
#> 21          1         L  0.1310      7        30        85    14