| Patient Characteristics |
Mean withdrawal time < 11 minutes (n=452) |
Mean withdrawal time > 11 minutes (n=399) |
p-value |
| Age |
57 (8) |
58 (8) |
0.52 |
| Sex, Female |
243 (54%) |
214 (54%) |
0.97 |
| BMI |
29 (7)1 |
28 (6)2 |
0.16 |
| Race |
|
|
0.38 |
| White |
362 (80%) |
306 (77%) |
|
| Black |
45 (10%) |
39 (10%) |
|
| Asian |
8 (2%) |
7 (2%) |
|
| Other |
37 (8%) |
47 (12%) |
|
| Smoker |
179 (40%) |
137 (34%) |
0.11 |
| Aspirin Use |
158 (35%) |
126 (32%) |
0.3 |
| Diabetes |
73 (16%) |
52 (13%) |
0.2 |
| Procedural Characteristics |
| Adequate Preparation |
378 (84%) |
339 (85%) |
0.59 |
|
