A total of 907 participants were enrolled. More than 99% of both systolic and diastolic TT nurse BP ended with zero, demonstrating that they had terminal digit preference. ST nurse BP was in better agreement with digital blood pressure measurement than with TT nurse BP. The number of differences of < or =5 mmHg between ST nurse BP and digital blood pressure measurement was approximately 60% for both systolic and diastolic blood pressure. Overall, traditionally trained nurses overestimated, rather than underestimated, blood pressure. However, systolic blood pressure underestimation was extremely prominent in participants with moderate to severe hypertension. Systolic blood pressure underestimation of >5 mmHg was as high as 57.5% by traditionally trained nurses versus 33.8% by the automatic device, indicating that traditionally trained nurses tended to underestimate blood pressure in participants with more severe hypertension.