Gender-Specific Longitudinal Association of Sleep Duration with Blood Pressure among Children: Evidence from CHNS 2004–2015

Table 3

The distribution of BP based on sleep duration, converging all survey times.

		SBP			DBP			Elevated BP
Overall	n	Mean (SD)	t		Mean (SD)	t		N (%)	χ^2
<9 h	587	98.83 (13.00)	6.104	<0.001	64.84 (9.29)	4.307	<0.001	98 (16.7)	6.532	0.011
≥9 h	1604	95.05 (12.22)			62.94 (9.09)			200 (12.5)
Boy
<9 h	327	99.15 (13.20)	4.149	<0.001	64.63 (9.33)	1.473	0.141	57 (17.4)	1.966	0.161
≥9 h	854	95.77 (12.28)			63.76 (9.07)			121 (14.2)
Girl
<9 h	260	98.42 (12.46)	4.715	<0.001	65.10 (9.26)	4.725	<0.001	41 (15.8)	5.056	0.025
≥9 h	750	94.25 (12.10)			62.01 (9.03)			79 (10.5)