Table 1.
The association between the occurrence of swirl sign and different variables included in the analysis of this study
| |
|
Swirl sign |
|
OR (95% CI) | p-value | |
|---|---|---|---|---|---|---|
| Negative | Positive | Total | ||||
| Gender |
Male |
64 (70) |
27 (30) |
91 |
|
|
| |
Female |
78 (70) |
34 (30) |
112 |
1 (0.5-2) |
0.520 |
| Diabetes mellitus |
Yes |
17 (74) |
6 (26) |
23 |
|
|
| |
No |
125 (69) |
55 (31) |
180 |
1.3 (0.4-3.8) |
0.431 |
| Former stroke (1) |
Yes |
30 (77) |
9 (23) |
39 |
|
|
| |
No |
111 (68) |
52 (32) |
163 |
1.6 (0.7-3.8) |
0.189 |
| Smoking (5) |
Yes |
16 (70) |
7 (30) |
23 |
|
|
| |
No |
123 (70) |
52 (30) |
175 |
1 (0.4-2.8) |
0.558 |
| Hypertension treatment on admission (1) |
Yes |
98 (77) |
30 (23) |
128 |
|
|
| |
No |
43 (58) |
31 (42) |
74 |
2.4 (1.2-4.6) |
0.005 |
| Acetyl salicylic acid treatment (11) |
Yes |
22 (59) |
15 (41) |
37 |
|
|
| |
No |
112 (72) |
43 (28) |
155 |
0.6 (0.3-1.3) |
0.306 |
| Warfarin treatment (9) |
Yes |
12 (67) |
6 (33) |
18 |
|
|
| |
No |
123 (70) |
53 (30) |
176 |
0.9 (0.3-2.7) |
0.483 |
| Platelet activator inhibitor treatment (11) |
Yes |
25 (61) |
16 (39) |
41 |
|
|
| |
No |
109 (72) |
42 (28) |
151 |
0.6 (0.3-1.3) |
0.117 |
| Time to hospital (6) |
< 2 h |
56 (64) |
32 (36) |
88 |
|
|
| |
2-24 h |
54 (69) |
24 (31) |
78 |
|
|
| |
> 24 h |
27 (87) |
4 (13) |
31 |
0.3 (0.1-0.9) |
0.051 |
| RLS (5) |
1 |
80 (81) |
19 (19) |
99 |
|
|
| |
2 – 3 |
41 (64) |
23 (36) |
64 |
|
|
| |
≥ 4 |
16 (46) |
19 (54) |
35 |
5 (2–12,6) |
<0.001 |
| Side |
Left |
68 (67) |
34 (33) |
102 |
|
|
| |
Right |
74 (73) |
27 (27) |
101 |
0.7 (0.4-1.4) |
0.192 |
| Location |
Lobar |
55 (67) |
27 (33) |
82 |
|
|
| |
Deep |
66 (73) |
25 (27) |
91 |
|
|
| |
Brain stem |
9 (82) |
2 /18) |
11 |
|
|
| |
Cerebellum |
11 (65) |
6 (35) |
17 |
|
|
| |
Multiple |
1(50) |
1 (50) |
2 |
0.8 (0.4-1.6) |
0.745 |
| Midline shift |
Yes |
23 (43) |
30 (57) |
53 |
|
|
| |
No |
119 (79) |
31 (21) |
150 |
0.2 (0.1-0.4) |
<0.001 |
| Intraventricular hemorrhage |
Yes |
35 (51) |
33 (49) |
68 |
|
|
| |
No |
107 (79) |
28 (21) |
135 |
0.3 (0.1-0.6) |
<0.001 |
| White matter lesions, Wahlund score |
0 |
34 (65) |
18 (35) |
52 |
|
|
| |
1 |
44 (75) |
19 (25) |
63 |
|
|
| |
2 |
25 (71) |
10 (29) |
35 |
|
|
| 3 | 39 (74) | 14 (26) | 53 | 0.7 (0.3-1.7) | 0.118 | |
Figures between parentheses in the first column show the number of the missing data in each of the studied variables.
Figures between parentheses under swirl sign (column 3 and 4) show percentage.
p-values written in bold are statistically significant.
RLS reaction level scale, OR Odds ratio. 95%, CI 95% confidence interval.