Table 4.
Ultrasound | Total | p-value | ||
Negative | Positive | |||
No. of risk factors – n (%) | p = 0.064 | |||
1 | 78 (97.5%) | 2 (2.5%) | 80 (100.0%) | |
2 | 122 (94.6%) | 7 (5.4%) | 129 (100.0%) | |
3 or more | 263 (90.4%) | 28 (9.6%) | 291 (100.0%) | |
Total patients | 463 (92.6%) | 37 (7.4%) | 500 (100.0%) |
p-value: Fisher's exact test.