Possibilities of Interpreting the Night-to-Day Ratio Specified by 24-Hour Blood Pressure Monitoring

Table 4

Classification accordance (%) of night decrease of blood pressure based on the definition night-to-day ratio (D, ND, ED, and R) specified from the quotient of values for 7 days and values for individual days and mode of classification in the individual days in a cohort of 51 patients with exercise.

No	Mean	Night-to-day ratio (%)				Accordance	Mode	Accordance
	7 days	R	ND	D	ED	7 : 1 day	7 days	7 : 1 day
1	R	71	29			71	R	71
2	ND	43	57			57	ND	57
3	ND	67	33			33	R	67
4	ND	29	71			71	ND	71
5	ND	43	57			57	ND	57
6	ND	43	29	28		29	R	43
7	ND	28	43	29		43	ND	43
8	ND	57	14	29		14	R	57
9	ND	29	43	28		43	ND	43
10	ND	29	57	14		57	ND	57
11	ND	28	29	43		29	D	43
12	ND		86	14		86	ND	86
13	ND	29	43	28		43	ND	43
14	ND	14	43	43		43	D/ND	43
15	ND	14	43	43		43	D/ND	43
16	ND	14	57	15	14	57	ND	57
17	ND	14	43	43		43	D/ND	43
18	ND	15	57	14	14	57	ND	57
19	ND	14	43	43		43	D/ND	43
20	ND		57	29	14	57	ND	57
21	ND		71	15	14	71	ND	71
22	D		57	43		43	D	57
23	D		57	43		43	D	57
24	D		43	43		43	D/ND	43
25	D		57	29	14	29	ND	57
26	D		43	43	14	43	D/ND	43
27	D	14	14	71		71	D	71
28	D		57	43		43	ND	57
29	D	13	29	29	29	29	D/ND/ED	29
30	D	15		71	14	71	D	71
31	D	29	13	29	29	29	D/ED/R	29
32	D			100		100	D	100
33	D		43	43	14	43	D/ND	43
34	D	13	29	29	29	29	D/ND/ED	29
35	D		14	71	14	71	D	71
36	D		29	57	14	57	D	57
37	D		14	86		86	D	86
38	D		33	50	17	50	D	50
39	D			100		100	D	100
40	D	14	15	14	57	14	ED	57
41	D		15	71	14	71	D	71
42	D		29	43	28	43	D	43
43	D		14	71	15	71	D	71
44	D			71	29	71	D	71
45	D			71	29	71	D	71
46	D			43	57	43	ED	57
47	D			50	50	50	D/ED	50
48	ED		14	29	57	57	ED	57
49	ED			29	71	71	ED	71
50	ED			14	86	86	ED	86
51	ED				100	100	ED	100
Mean						54		59
Min-max						14–100		29–100

D: dipper, ND: nondipper, ED: extreme dipper, and R: risers (reverse dipper). Mode: classification based on the highest frequency of category occurrence across individual days. /: mode cannot be clearly specified.