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Table 4 Comparison of the period of progression by age groups: from normal to elevated BP, stage 1 HTN, or stage 2 HTN

From: A longitudinal analysis of the progression from normal blood pressure to stage 2 hypertension: A 12-year Korean cohort

Course Age (mean±SD) P-value
40–49 years
(n= 13,323)
50–59 years
(n= 3551)
60–79 years
(n= 1580)
Normal BP→ Elevated BP 4.0±3.0
5031 (37.8)
4.1±3.0
1237 (34.9)
3.6±2.3
408 (25.8)
0.01a
Normal BP→ Stage 1 HTN 4.1±2.7
7442 (55.9)
3.9±2.6
1980 (55.8)
3.5±2.3
855 (54.1)
< 0.01b
Normal BP→ Stage 2 HTN 3.6±2.3
850 (6.4)
3.5±2.3
334 (9.4)
2.8±1.6
317 (20.1)
< 0.01a
  1. Values are expressed as number and percentage (%)
  2. P-values are from ANOVA test with Duncan method of mean proceed time between age groups
  3. BP blood pressure, HTN hypertension
  4. aTwo age groups (40–49 years and 50–59 years) were different with 60–79 years
  5. bAll three groups were statistically different