Table 2

Subgroup analyses of the association between prehypertension and cardiovascular morbidity
Subgroup Risk ratio (95% CI) P-value between subgroups
Blood pressure range
 Low-range prehypertension 1.46 (1.32, 1.62) 0.02
 High-range prehypertension 1.63 (1.47, 1.80)
Gender
 Men 1.80 (1.44, 2.24) 0.11
 Women 1.46 (1.28, 1.67)
Race/ethnicity
 Asian 1.54 (1.34, 1.77) 0.96
 Non-Asian 1.55 (1.36, 1.77)
Participant’s average age
 <55 years 1.55 (1.31, 1.84) 0.72
 ≥55 years 1.50 (1.35, 1.67)
Follow-up duration
 <10 years 1.45 (1.27, 1.67) 0.21
 ≥10 years) 1.63 (1.45, 1.84)
Participant number
 <10,000 1.59 (1.38, 1.84) 0.52
 ≥10,000 1.49 (1.28, 1.73)
Study quality
 Good (score 7 to 8) 1.54 (1.37, 1.73) 1
 Fair (score 4 to 6) 1.54 (1.21, 1.96)

Huang et al.

Huang et al. BMC Medicine 2013 11:177   doi:10.1186/1741-7015-11-177

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