Table 2.

Frequency distribution of inter-arm systolic blood pressure difference (sIAD) categories at exam 1 and exam 3, N = 5816.

	All	Absolute sIAD (mmHg), exam 3 (row %)
Absolute sIAD (mmHg), exam 1		0–4	5–9	10–14	15–19	20–24	≥25
0–4	3464	1995 (57.6)	859 (24.8)	450 (13)	94 (2.7)	50 (1.4)	16 (0.5)
5–9	1380	751 (54.4)	346 (25.1)	201 (14.6)	42 (3)	27 (2)	13 (0.9)
10–14	712	370 (52)	182 (25.6)	112 (15.7)	27 (3.8)	15 (2.1)	6 (0.8)
15–19	140	65 (46.4)	36 (25.7)	27 (19.3)	7 (5)	2 (1.4)	3 (2.1)
20–24	82	41 (50)	21 (25.6)	8 (9.8)	5 (6.1)	5 (6.1)	2 (2.4)
≥25	38	17 (44.7)	9 (23.7)	3 (7.9)	3 (7.9)	3 (7.9)	3 (7.9)
All	5816	3239	1453	801	178	102	43