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. 1998 Aug 22;317(7157):513–514. doi: 10.1136/bmj.317.7157.513

Table.

Systolic and diastolic arterial blood pressure by standard occupational group at baseline and four years’ follow up of healthy, untreated elderly people (mean age at baseline 74.4 years, mean education 11.2 years) compared with those with incident disease (mean age at baseline 75.8 years, mean education 10.9 years) or hypertension only (mean age at baseline 75.6 years, mean education 10.6 years). Values are mean (SD) unless stated otherwise

Group No of patients Baseline blood pressure (mm Hg)
Follow up blood pressure (mm Hg)
Systolic Diastolic Systolic Diastolic
Unclassified   8 171 (21) 92 (4)  164 (19) 92 (10)
1  34 155 (19) 83 (10) 162 (21) 89 (10)
2  31 152 (26) 82 (11) 157 (24) 83 (9) 
3  14 139 (13) 82 (9)  150 (17) 86 (11)
4  40 148 (20) 84 (10) 160 (22) 87 (8) 
5  15 157 (12) 85 (6)  163 (17) 88 (10)
6   8 156 (14) 83 (7)  159 (12) 91 (6) 
7  26 159 (24) 82 (8)  164 (20) 86 (11)
8   6 138 (23) 83 (11) 137 (10) 80 (4) 
9  11 157 (24) 88 (11) 156 (18) 88 (11)
Healthy 195 153 (22) 84 (9)  159 (20) 87 (10)
Diseased 163 160 (23) 85 (10) 159 (22) 86 (11)
Hypertension only  29 181 (18) 96 (12) 169 (18) 90 (10)