Differences in Framingham risk estimates using alternative summary measures of mean blood pressure in the BP-Eth cohort
| Alternative BP measurement used in risk score | Median absolute difference, % (IQR) | Difference range (original minus alternative) |
|---|---|---|
| Ambulatory measurements | ||
| Daytime ABPM | 1.84 (0.65 to 3.63) | −18.04 to 12.59 |
| Night-time ABPM | 2.65 (1.09 to 5.91) | −17.96 to 19.61 |
| 24-hour ABPM | 1.85 (0.76 to 3.63) | −17.61 to 13.45 |
| Home measurements | ||
| Excluding first day’s readings | 1.66 (0.61 to 3.12) | −15.94 to 11.56 |
| Including first day’s readings | 1.69 (0.58 to 3.09) | −16.54 to 12.23 |
| Clinic measurements | ||
| Current UK guidance | 0.78 (0.35 to 1.62) | −15.22 to 9.15 |
ABPM = ambulatory blood pressure monitoring. BP = blood pressure. BP-Eth = Blood Pressure in different Ethnic groups study. IQR = interquartile range.