FAST CAT簡介
FAST CAT包含4個向度:上肢動作、下肢動作、平衡、及BADL,此4向度之題目分別來自:UE-STREAM、LE-STREAM、PASS、BI等4個測驗。
模擬分析方法
FAST CAT模擬分析共使用2類(共8種)「測驗停止規則 (stopping rule)」,第1類測驗停止規則僅考慮「信度增加量」,此類規則包含4種,分別為若多測1題後,「信度增加量小於 0.005、0.010、0.015、及0.020」則停止測驗。
第2類測驗停止規則同時考慮「信度增加量及測驗最終信度」,此類規則亦包含4種,分別為「信度≧0.90或信度增加量小於 0.005、0.010、0.015、及0.020」則停止測驗。
模擬分析結果
FAST CAT模擬分析結果呈現於 (Table 1)。整體趨勢顯示第1類測驗停止規則之Rasch信度略優於第2類;然而第2類測驗停止規則之測驗效率優於第1類(所需測驗題數較少)。
第1及第2類測驗停止規則中,FAST CAT各向度之Rasch信度皆介於0.89~0.94。第1類測驗停止規則之測驗平均題數為6.6~10.4;第2類測驗停止規則則為6.2~8.4
測驗停止規則選擇
停止規則選擇條件有2:(1) 4向度的信度皆≧0.90;(2)平均測驗題數<10題。
滿足以上條件之測驗規則僅1個:信度增加量小於 0.010 (Table 1, set B)。
使用此測驗停止規則之FAST CAT,其各向度Rasch信度皆介於0.90~0.94,平均測驗題數8.4題(全距4~17題)。
Table 1. Precision and
efficiency of the 8 sets of stopping rules for the FAST CAT
Sets of rules/Measures
|
A
|
B
|
C
|
D
|
|
E
|
F
|
G
|
H
|
Item bank
|
Precision (Rasch reliability)
|
|
|
|
|
|
|
|
|
|
|
UE-STREAM
|
|
|
|
|
|
|
|
|
|
|
0.91
|
0.90
|
0.90
|
0.90
|
|
0.90
|
0.89
|
0.89
|
0.89
|
0.92
|
|
Maximal
|
0.99
|
0.99
|
0.99
|
0.99
|
|
0.99
|
0.99
|
0.99
|
0.99
|
1.00
|
Minimal
|
0.35
|
0.34
|
0.33
|
0.33
|
|
0.35
|
0.34
|
0.33
|
0.33
|
0.36
|
% of the patients with reliability≧0.70
|
91.6
|
92.2
|
90.9
|
90.5
|
|
91.6
|
92.2
|
90.9
|
90.5
|
91.6
|
% of the patients with
reliability≧0.90
|
72.6
|
74.0
|
72.6
|
73.3
|
|
73.3
|
74.0
|
72.6
|
73.3
|
74.0
|
LE
|
|
|
|
|
|
|
|
|
|
|
0.93
|
0.92
|
0.91
|
0.91
|
|
0.91
|
0.91
|
0.90
|
0.90
|
0.94
|
|
Maximal
|
0.98
|
0.98
|
0.98
|
0.97
|
|
0.98
|
0.98
|
0.97
|
0.97
|
0.99
|
Minimal
|
0.47
|
0.47
|
0.47
|
0.47
|
|
0.47
|
0.47
|
0.47
|
0.47
|
0.47
|
% of the patients with reliability≧0.70
|
97.6
|
97.6
|
97.6
|
97.6
|
|
97.3
|
97.6
|
97.6
|
97.6
|
98.0
|
% of the patients with
reliability≧0.90
|
81.1
|
78.7
|
78.4
|
73.3
|
|
81.1
|
78.7
|
78.4
|
73.3
|
82.4
|
PASS
|
|
|
|
|
|
|
|
|
|
|
0.94
|
0.94
|
0.93
|
0.92
|
|
0.94
|
0.93
|
0.92
|
0.92
|
0.97
|
|
Maximal
|
0.98
|
0.98
|
0.98
|
0.97
|
|
0.98
|
0.97
|
0.97
|
0.97
|
0.99
|
Minimal
|
0.79
|
0.77
|
0.77
|
0.77
|
|
0.79
|
0.77
|
0.77
|
0.77
|
0.79
|
% of the patients with reliability≧0.70
|
100.0
|
100.0
|
100.0
|
100.0
|
|
100.0
|
100.0
|
100.0
|
100.0
|
100.0
|
% of the patients with
reliability≧0.90
|
91.2
|
85.8
|
81.1
|
75.3
|
|
91.2
|
85.8
|
81.1
|
75.3
|
96.3
|
BI
|
|
|
|
|
|
|
|
|
|
|
Average
|
0.91
|
0.90
|
0.89
|
0.89
|
|
0.91
|
0.90
|
0.89
|
0.89
|
0.95
|
Maximal
|
0.95
|
0.94
|
0.94
|
0.94
|
|
0.95
|
0.94
|
0.94
|
0.93
|
0.97
|
Minimal
|
0.78
|
0.77
|
0.77
|
0.77
|
|
0.78
|
0.77
|
0.77
|
0.77
|
0.79
|
% of the patients with reliability≧0.70
|
100.0
|
100.0
|
100.0
|
100.0
|
|
100.0
|
100.0
|
100.0
|
100.0
|
100.0
|
% of the patients with
reliability≧0.90
|
78.4
|
73.3
|
66.6
|
56.4
|
|
78.7
|
73.6
|
66.9
|
56.8
|
95.9
|
Efficiency (number of
items)
|
|
|
|
|
|
|
|
|
|
|
Average
|
10.4
|
8.4
|
7.4
|
6.6
|
|
8.4
|
7.3
|
6.7
|
6.2
|
58
|
Medium (Q1–Q3)
|
10
(18–13)
|
9
(7–10)
|
8
(6–9)
|
7
(5–8)
|
|
7
(6–11)
|
7
(6–9)
|
7
(5–9)
|
6
(5–8)
|
58
(58–58)
|
Range
|
4–17
|
3–13
|
3–12
|
3–12
|
|
3–17
|
3–13
|
3–12
|
3–12
|
58
|
% of the patients using
> 5 items
|
97.0
|
88.5
|
77.0
|
67.2
|
|
76.0
|
71.6
|
63.5
|
55.7
|
100.0
|
% of the patients using
> 10 items
|
49.3
|
17.6
|
5.1
|
1.0
|
|
28.7
|
13.9
|
4.1
|
1.0
|
100.0
|
2.0
|
0.0
|
0.0
|
0.0
|
|
2.0
|
0.0
|
0.0
|
0.0
|
100.0
|
Sets of stopping rules A~D: LRI
(A: < 0.005, B: < 0.010, C: < 0.015, D: < 0.020);
Sets of stopping rules E~H:
Rasch reliability ≧ 0.90 or LRI
(E: < 0.005, F: < 0.010, G: < 0.015, H: < 0.020);
LRI: limited reliability
increase.
FAST CAT稿件寫作進度:每週2-3個半天,至少3段。
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