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Table 3 Mean (standard deviation) number of administered items

From: An evaluation of computerized adaptive testing for general psychological distress: combining GHQ-12 and Affectometer-2 in an item bank for public mental health research

Theta estimator Item selection Prior SEM threshold θ true  ~ N(0,1) SEM threshold θ true  ~ U(-3,3)
0.25 0.32 0.40 0.45 0.50 0.25 0.32 0.40 0.45 0.50
MLE UW-FI - 25 (13) 12 (6) 7 (3) 6 (2) 5 (2) 29 (17) 15 (9) 9 (5) 7 (3) 5 (3)
MLE FP-KL - 25 (13) 12 (6) 7 (3) 6 (2) 5 (2) 29 (17) 15 (9) 9 (5) 7 (3) 6 (3)
BME UW-FI Normal 23 (12) 10 (5) 5 (2) 4 (2) 3 (1) 28 (17) 13 (7) 7 (4) 5 (3) 4 (2)
BME UW-FI Uniform 25 (13) 12 (6) 7 (3) 6 (3) 5 (2) 29 (17) 15 (9) 9 (5) 7 (4) 6 (3)
BME FP-KL Normal 23 (12) 10 (5) 5 (2) 4 (2) 3 (1) 28 (17) 13 (7) 7 (4) 5 (3) 4 (2)
BME FP-KL Uniform 25 (13) 12 (6) 7 (3) 6 (3) 5 (2) 29 (17) 15 (9) 9 (5) 7 (4) 6 (3)
EAP UW-FI Normal 23 (12) 11 (5) 6 (2) 5 (2) 4 (1) 28 (17) 13 (7) 7 (4) 5 (3) 4 (2)
EAP UW-FI Uniform 26 (13) 13 (6) 8 (3) 6 (2) 5 (2) 30 (17) 15 (9) 9 (4) 7 (3) 6 (2)
EAP FP-KL Normal 23 (12) 11 (5) 6 (2) 5 (2) 4 (1) 28 (17) 13 (7) 7 (4) 5 (3) 4 (2)
EAP FP-KL Uniform 26 (13) 13 (6) 8 (3) 6 (2) 5 (2) 30 (17) 15 (8) 9 (4) 7 (3) 6 (2)