An External Validation Study of the Oakland and Glasgow-Blatchford Scores for Predicting Adverse Outcomes of Acute Lower Gastrointestinal Bleeding in an Asian Population
Table 5
Cut-off points of scoring systems for predicting the presence of any adverse outcome.
Oakland score
SALGIB score
Blatchford score
Score
Sens
Spec
Cum%
Score
Sens
Spec
Cum%
Score
Sens
Spec
Cum%
>5
100.00
0.40
0.2
>0
85.71
45.85
33.6
>0
92.45
23.72
17.5
>6
100.00
1.58
1.0
>1
81.37
70.36
50.2
>1
88.68
43.08
30.8
>7
100.00
2.37
1.4
>2
77.02
74.31
54.3
>2
85.53
48.62
35.4
>8
99.38
5.93
3.9
>3
65.84
87.75
66.9
>3
83.02
54.94
40.3
>9
99.38
7.51
4.8
>4
60.25
92.49
72.0
>4
79.25
60.87
45.4
>10
96.89
15.02
10.4
>5
30.43
94.07
84.5
>5
78.62
65.61
48.5
>11
93.79
23.72
16.9
>6
13.66
99.21
94.2
>6
59.75
78.26
63.6
>12
90.06
30.04
22.2
>7
9.94
100.00
96.1
>7
45.28
86.17
74.0
>13
89.44
37.15
26.8
>8
8.70
100.00
96.6
>8
38.99
90.12
78.9
>14
86.34
46.25
33.6
>9
4.35
100.00
98.3
>9
26.42
94.07
86.2
>15
84.47
51.38
37.4
>10
0.00
100.00
100.0
>10
22.01
96.84
89.6
>16
83.23
58.50
42.3
>11
15.09
98.42
93.2
>17
82.61
63.64
45.7
>12
11.32
99.21
95.1
>18
81.37
66.80
48.1
>13
5.66
100.00
97.8
>19
78.88
69.17
50.5
>14
2.52
100.00
99.0
>20
73.91
73.12
54.8
>15
1.89
100.00
99.3
>21
68.94
82.21
62.3
>16
0.00
100.00
100.0
>22
66.46
83.79
64.3
>23
60.87
87.35
68.6
>24
56.52
92.49
73.4
>25
49.69
94.47
77.3
>26
43.48
96.44
80.9
>27
40.99
97.23
82.4
>28
32.30
98.42
86.5
>29
24.22
98.42
89.6
>30
14.29
99.60
94.2
>31
6.83
99.60
97.1
>32
3.73
99.60
98.3
>33
0.00
100.00
100.0
Cum%: percentage of the total frequency of patient distribution according to score. Sens: sensitivity; spec: specificity. Cut-off points determined by the Youden index.
