Table II.

Comparing 2019 to 2020 changes in number of blood pressure readings SBP, DBP and, MAP seen in the first 3 months of 2020 before COVID-19 and those seen during covid-19

Variable	Changes seen Jan-Mar, 2020 relative to Jan-Mar, 2019 (PreCOVID-19 Period)	Changes seen Apr-Aug 2020 relative to Apr-Aug 2019 (COVID-19 Period)	Pandemic Effect: Delta between changes in months Jan-Mar 2020 vs. 2019, and those during COVID months in 2020 vs. same months in 2019	P value
# of Monthly Blood Pressure Readings1	0.89 (0.86-0.93)	1.27 (1.24-1.41)	1.42 (1.36-1.49)	< .001
SBP	1.65 (1.22-2.08)	3.56 (3.27-3.84)	1.90 (1.47-2.34)	< .001
DBP	-0.20 (-0.48-0.09)	0.9 (0.60-1.19)	1.19 (0.91-1.48)	< .001
MAP	0.50 (0.2-0.79)	1.89 (1.69-2.09)	1.39 (1.09-1.69)	< .001

1 Statistics presented for the number of blood pressure readings represent unadjusted relative change in mean # of monthly blood pressure readings from Jan through March 2020 relative to the same months in 2019 (Column 1). These are compared relative to similar changes seen in blood pressure readings from April through August 2020 (COVID-19 period) relative to the same months in 2019 (column 2) and then Column 3 represents delta (ratio of ratios) between column 1 and 2 (reflecting any changes that may be more specific to COVID-19). Similar analyses were also done for SBP, DBP and MAP (where the measures represent mean differences between the time periods listed in mmHg).