Table 2.

Comparison of DWI Positive and DWI Negative TIA Patients

	DWI Positive (n=51)	DWI Negative (n=272)	p
Age in years, mean (SEM, range)	75.2 (2.09, 49–93)	64.2 (1.92, 20–97)	0.0001
Estimated initial NIH Stroke Scale, median (IQR, range)	0 (0–2, 0–8)	1 (0–2, 0–9)	0.90
For following categories, raw frequencies (weighted % of non-missing) are shown:
Pre-onset modified Rankin			0.60
0	21 (38.2)	106 (45.2)
1	13 (31.0)	72 (23.8)
2 to 4	17 (30.9)	94 53.3)
Race			0.75
Black	7 (12.7)	41 (13.6)
White	44 (87.3)	228 (85.5)
Other	0 (0)	3 (1.0)
Gender			0.67
Female	29 (60.0)	155 (56.3)
Male	22 (40.0)	117 (43.7)
Prior stroke or TIA	18 (32.7)	131 (43.3)	0.20
Diabetes	14 (25.4)	71 (23.5)	0.77
Atrial Fibrillation	12 (21.8)	22 (7.3)	0.002
Focal weakness	31 (56.3)	163 (64.2)	0.37
Speech deficit	29 (60.0)	147 (53.8)	0.48
Symptom duration			0.61
< 10 min	4 (7.3)	26 (8.6)
10–60 min	19 (34.5)	100 (38.1)
> 60 min	28 (58.2)	146 (53.3)