Table 2: Indication and findings of the computerized brain tomography scan among the four groups.
|
Study group, n (%) |
All |
R+D+ (a) |
R+D- (b) |
R-D+ (c) |
R-D- (d) |
p value |
|
1339 (100) |
263 (19.6) |
162 (12.1) |
197(14.7) |
717 (53.5) |
(a vs. b)* |
|
|
Indication for brain-CT, n (%) |
||||||
|
Suspected stroke |
255 (19.0) |
115 (43.7) |
20 (12.3) |
58 (29.4) |
62 (8.6) |
0.001 |
|
Suspected TIA |
29 (2.2) |
8 (3.0) |
3 (1.9) |
9 (4.6) |
9 (1.3) |
|
|
Other neurological presentations |
382 (28.5) |
56 (21.3) |
65 (40.1) |
44 (22.3) |
217 (30.3) |
< 0.001 |
|
Trauma |
299 (22.3) |
44 (16.7) |
40 (24.7) |
31 (15.7) |
184 (25.7) |
0.05 |
|
Neurosurgery |
113 (8.4) |
17 (6.5) |
10 (6.2) |
25 (12.7) |
61 (8.5) |
|
|
Unknown |
237 (17.7) |
22 (8.4) |
19 (11.7) |
28 (14.2) |
168 (23.4) |
|
|
Other |
24 (1.8) |
1 (0.4) |
5 (3.1) |
2 (1.0) |
16 (2.2) |
|
|
Referred from ED, n (%) |
197 (14.7) |
49 (18.6) |
24 (14.8) |
34 (17.3) |
90 (12.6) |
0.06 |
|
Had prior brain-CT, n (%) |
430 (32.1) |
143 (54.4) |
59 (36.4) |
84 (42.6) |
144 (20.1) |
|
|
Location of brain infarction in the report, n (%) |
||||||
|
Only in summary |
247 (18.4) |
141 (53.6) |
106 (65.4) |
- |
- |
|
|
Only in text |
25 (1.9) |
13 (4.9) |
12 (7.4) |
- |
- |
< 0.001 |
|
Both in text and summary |
153 (11.4) |
109 (41.4) |
44 (27.2) |
- |
- |
< 0.001 |
|
Radiology findings, n (%) |
||||||
|
Ischemic non-lacunar infarctions |
183 (13.7) |
128 (48.7) |
55 (34.0) |
|
|
0.001 |
|
Lacunar infarctions |
276 (20.6) |
159 (60.5) |
117 (72.2) |
|
|
0.009 |
|
Intracerebral hemorrhage |
20 (1.5) |
17 (6.5) |
3 (1.9) |
|
|
0.03 |