Relationship between sleep quality and blood pressure level in nurses performing shift work

Figure 1.

Figure 2.

Relationships between sleep quality and BP levels in nurses performing shift work_

BP level	Sleep quality		P-value
	Good	Poor
Total (n = 40)			<0.001*
Optimal + normal + high normal	15 (83.33%)	3 (16.67%)
AH	1 (4.55%)	21 (95.45%)
Nurses of the therapeutic departments (n = 20)			=0.005*
Optimal + normal + high normal	6 (85.71%)	1 (14.29%)
AH	0 (0%)	13 (100.00%)
Nurses of the surgical departments (n = 20)			=0.006*
Optimal + normal + high normal	9 (81.82%)	2 (18.18%)
AH	1 (11.11%)	8 (88.89%)

Dependence of sleep quality on respondents’ marital status (n = 40)_

Characteristic	Sleep quality		χ2, P-value
	Good	Poor
Marital status			χ2 = 9.36, P = 0.009*
Married	4 (33.33%)	8 (66.67%)
Divorced	3 (18.75%)	13 (81.25%)
Single	9 (75.00%)	3 (25.00%)
Number of children			χ2 = 15.03, P < 0.001*
0	8 (100.00%)	0 (0%)
1	4 (23.53%)	13 (76.47%)
2	4 (26.67%)	11 (73.33%)

Dependence of sleep quality on the work schedule of nurses performing shift work_

Sleep quality	Nurses of the therapeutic departments (n = 20)	Nurses of the surgical departments (n = 20)	Total (n = 40)
Duration of shift work
Good	10.50 ± 0.55	9.20 ± 1.69	9.69 ± 1.49
Poor	16.93 ± 3.58	14.00 ± 2.26	15.71 ± 3.38
P-value	<0.001*	<0.001*	<0.001*
Frequency of night shifts during the month
Good	6.00 ± 0.00	6.80 ± 0.79	6.50 ± 0.73
Poor	7.14 ± 0.53	7.20 ± 0.63	7.17 ± 0.56
P-value	<0.001*	=0.227	=0.003*

Dependence of sleep quality on the age of nurses performing shift work_

Sleep quality	Nurses of the therapeutic departments (n = 20)	Nurses of the surgical departments (n = 20)	Total (n = 40)
Good	33.50 ± 3.51	33.50 ± 5.58	33.50 ± 4.77
Poor	46.14 ± 5.36	41.90 ± 4.07	44.38 ± 5.22
P-value	<0.001*	=0.001*	<0.001*

Dependence of BP level on sleep quality in nurses performing shift work_

Sleep quality	Nurses of the therapeutic departments (n = 20)	Nurses of the surgical departments (n = 20)	Total (n = 40)
SBP
Good	121.67 ± 2.58	122.00 ± 1.11	121.88 ± 8.73
Poor	141.07 ± 9.44#	133.50 ± 6.69	137.92 ± 6.08
P-value	<0.001*	<0.001*	=0.012*
DBP
Good	81.67 ± 7.53	81.00 ± 1.08	81.25 ± 6.40
Poor	96.07 ± 5.61	91.00 ± 8.10	93.96 ± 7.07
P-value	<0.001*	<0.001*	=0.031*

BP levels in nurses performing shift work_

Indicator	Nurses of the therapeutic departments	Nurses of the surgical departments	P-value
SBP (mm Hg)	135.25 ± 12.08	127.75 ± 10.70	0.045*
DBP (mm Hg)	91.75 ± 9.07	86.00 ± 10.59	0.073