Level of proinsulin in association with cardiovascular risk factors and sleep snoring

Table 4 Analysis of covariate variance with sleep snoring as factor variable, and age and sex as controlling variables

Para- meters	Never	Seldom	Some-times	Often	Very often	F	P
BMI	23.49±2.83	24.08±2.89	24.14±2.84	24.56±3.66	25.32±3.47	16.335	0.000
WC	75.89±7.78	78.68±8.31	78.83±7.89	81.65±9.98	83.37±10.63	22.000	0.000
SBP	121.03±19.05	128.77±21.08	126.39±20.28	126.80±20.29	133.93±23.16	7.169	0.000
DBP	77.25±10.66	79.48±10.75	80.20±11.58	80.68±13.89	85.59±13.59	9.957	0.000
FBG	4.44 (4.06-4.89)	4.40 (4.17-4.80)	4.53 (4.12-4.93)	4.47 (4.08-4.81)	4.53 (4.07-4.88)	0.124	0.974
CH	3.95 (3.39-4.54)	4.25 (3.32-5.01)	4.09 (3.67-4.60)	4.00 (3.49-4.65)	4.34 (3.70-5.04)	2.580	0.007
TG	0.75 (0.55-1.08)	0.77 (0.59-1.22)	0.91 (0.62-1.31)	0.79 (0.61-1.33)	0.89 (0.63-1.59)	5.778	0.000
HDL	1.07 (0.89-1.28)	1.15 (0.93-1.31)	1.02 (0.83-1.23)	1.03 (0.80-1.28)	1.04 (0.83-1.29)	1.693	0.149
LDL	2.44 (2.02-2.85)	2.55 (2.03-3.10)	2.60 (2.19-3.10)	2.53 (2.13-2.96)	2.74 (2.19-3.21)	1.392	0.234
TI	4.81 (2.89-6.98)	4.69 (2.54-7.09)	5.11 (3.55-7.18)	5.13 (2.88-7.50)	5.06 (3.16-7.58)	2.868	0.022
PI	3.26 (1.92-5.11)	3.29 (1.77-5.19)	4.03 (2.46-6.49)	4.19 (2.22-6.09)	4.43 (2.72-7.18)	5.980	0.000
RFS	1.24±1.15	1.47±1.33	1.57±1.27	1.70±1.28	2.06±1.53	11.135	0.000

Abbreviations as in Table 3.