Table 2. BP change during the study period.

	C group		D group		D+Ex group
	Difference	p value	Difference	p value	Difference	p value
Office SBP	2.0±10.0	0.319	0.7±9.6	0.677	−3.6±15.3	0.238
Office DBP	−1.4±7.3	0.334	0.4±8.2	0.809	−1.0±8.0	0.507
24-hour SBP	0.9±6.5	0.459	−1.6±7.4	0.248	−5.1±7.1	0.001
24-hour DBP	0.5±4.8	0.610	−0.7±4.6	0.393	−2.7±4.9	0.009
Daytime SBP	0.8±7.6	0.588	−1.1±7.4	0.438	−5.4±8.8	0.003
Daytime DBP	−0.1±5.4	0.944	−0.8±4.8	0.384	−4.1±6.8	0.004
Nighttime SBP	0.5±11.6	0.834	−3.1±11.5	0.147	−3.7±9.6	0.056
Nighttime DBP	0.4±7.4	0.781	−1.0±6.6	0.412	−1.2±6.9	0.366

Data are presented as mean±SD. Differences between baseline and at 8 weeks were compared with paired t-test.

BP = blood pressure; C group = advice-only comparison group; D group = diet education group; D+Ex = diet and exercise education group; DBP = diastolic blood pressure; SBP = systolic blood pressure.