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. 2020 Jan 13;20:44. doi: 10.1186/s12889-019-7994-4

Table 2.

Trend in Blood Pressure: Hypertension only (n = 451)

Parameter Value Visit 1 Visit 2 Visit 3 Visit 4
Systolic BP (mmHg) Valid values 429 434 419 422
Mean (sd.) 149 (28) 142 (24) 138 (22) 139 (24)
Range 90–259 95–222 90–210 86–240
Values > 140 (%) 57 46 39 39
Values > 180 (%) 13 7 5 7
Diastolic BP (mmHg) Valid values 427 432 413 419
Mean (sd.) 86 (14) 81 (13) 81 (13) 81 (13)
Range 49–134 48–141 50–124 50–123
Values > 90 (%) 29 20 19 18
Values > 110 (%) 4 2 1 1