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Table 5 Comparison of mean systolic and diastolic blood pressures of the workers on consecutive days of intervention.

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

Day of intervention Mean Systolic Blood Pressure (mm Hg) p value Mean Diastolic Blood Pressure (mm Hg) p value
Day 1 127.8 ± 11.1 0.98 80.7 ± 8.8 0.95
Day 2 127.8 ± 11.8   80.6 ± 12.8  
Day 2 127.8 ± 11.8 0.04* 80.6 ± 12.8 0.16
Day 3 123.4 ± 10.3   76.4 ± 8.6  
Day 3 123.4 ± 10.3 0.03* 76.4 ± 8.6 0.001*
Day 4 117.5 ± 9.9   62.6 ± 7.8  
Day 4 117.5 ± 9.9 0.08 62.6 ± 7.8 0.55
Day 5 113.8 ± 7.0   63.8 ± 8.0  
Day 5 113.8 ± 7.0 0.68 63.8 ± 8.0 0.65
Day 6 114.6 ± 6.5   63.0 ± 5.5  
  1. * Difference significant; Student's t-test (two-tailed)