Multilevel Analysis of 24-Hour Blood Pressure, Heart Rate, and Associated Factors among Police Officers in Hanoi, Vietnam

Table 2

Distribution of SBP/DBP/pulse by time sections and 24 hours among 244 participants.

Time sections	summer		Winter		Paired T test
	Means	SD	Means	SD
1-6 AM
SBP	106.0	12.2	104.2	12.7	0.0000
DBP	62.9	10.0	61.3	10.5	0.0000
Pulse	63.4	12.8	63.3	12.0	0.3341
7-12 AM
SBP	113.2	13.0	110.7	14.4	0.0000
DBP	68.8	10.3	67.4	11.6	0.0003
Pulse	73.1	13.4	73.7	13.5	0.1099
1-6 PM
SBP	113.2	13.0	113.2	13.9	0.0000
DBP	68.8	10.3	68.7	12.1	0.4773
Pulse	73.1	13.4	77.5	14.2	0.0000
7-12 PM
SBP	114.1	12.1	114.0	14.1	0.4339
DBP	69.6	10.4	69.8	12.3	0.3591
Pulse	75.3	12.9	76.4	13.9	0.0040
24 hours
SBP	112.1	13.2	110.5	14.3	0.0000
DBP	67.5	10.8	66.8	12.1	0.0000
Pulse	71.8	14.1	72.7	14.6	0.0000