Table 4.

Quartiles based on DBP reaction during orthostatic test

	n	Cut-off DBP reaction	Mean DBP decrease
ortDBP1	1470	-38.5 – -14.0	-17.4
ortDBP2	1621	-13.5 – -9.5	-11.4
ortDBP3	1367	-9.0 – -5.5	-7.3
ortDBP4	1394	-5.0 – 26.5	-1.1

Blood pressure reaction was defined as the difference between orthostatic blood pressure and supine blood pressure (Supine blood pressure subtracted by orthostatic blood pressure). Thus, a negative blood pressure reaction represents an increased blood pressure during the orthostatic test