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Table 4 Mean working hours, period of use of protective devices and morning blood pressure of workers on the days of intervention (n = 19).

From: Risk of high blood pressure in salt workers working near salt milling plants: A cross-sectional and interventional study

Day of intervention Mean no. of hours Worked Mean no. of hours masks used Mean no. of hours glasses used Mean Systolic Blood Pressure (mm Hg) Mean Diastolic Blood Pressure (mm Hg)
Day 1 6.2 ± 0.5 3.9 ± 1.0 4.8 ± 0.8 127.8 ± 11.1 80.7 ± 8.8
Day 2 10.0 ± 1.4 5.5 ± 1.5 6.5 ± 1.6 127.8 ± 11.8 80.6 ± 12.8
Day 3 9.7 ± 1.8 4.6 ± 1.3 5.2 ± 1.9 123.4 ± 10.3 76.4 ± 8.6
Day 4 7.9 ± 0.5 4.4 ± 1.9 4.8 ± 1.3 117.5 ± 9.9 62.6 ± 7.8
Day 5 9.3 ± 0.9 4.2 ± 1.1 4.5 ± 0.9 113.8 ± 7.0 63.8 ± 8.0
Day 6 9.1 ± 1.3 4.8 ± 1.4 5.2 ± 1.5 114.6 ± 6.5 63.0 ± 5.5
Total 8.7 ± 1.7 4.6 ± 1.5 5.1 ± 1.5