Table 4. Regression coefficients (β) for relationships between Actigraph-derived sedentary time and IPAQ-reported sitting time and vascular and metabolic risk factors.

Outcome	Sedentary Time – Accelerometer		Sitting Time – IPAQ
	β (95%CI)	p-value	β (95%CI)	p-value	p-interaction
Glucose (mmol.l−1)	0.2 (0.08 to 0.4)	0.003	0.1 (0.01 to 0.002)	0.008	0.936
Insulin (mU.l−1)	6.8 (5.1 to 8.4)	<0.0001	4.4 (3.0 to 5.8)	<0.0001	<0.0001
HOMAIR	1.5 (1.2 to 1.8)	<0.0001	0.9 (0.7 to 1.3)	<0.0001	<0.0001
Total Cholesterol (mmol.l−1)	0.31 (0.14 to 0.46)	<0.0001	0.21 (0.10 to 0.34)	0.002	0.943
HDL cholesterol (mmol.l−1)	−0.13 (−0.18 to −0.08)	<0.0001	−0.11 (−0.15 to −0.06)	<0.0001	0.794
LDL cholesterol (mmol.l−1)	0.36 (0.18 to 0.52)	<0.0001	0.27 (0.13 to 0.42)	<0.0001	0.910
Triglyceride (mmol.l−1)	0.17 (0.09 to 0.25)	<0.0001	0.09 (0.02 to 0.16)	0.009	0.564
Systolic BP (mm Hg)	2.9 (0.8 to 5.0)	0.006	2.2 (0.5 to 4.0)	0.012	0.445
Diastolic BP (mm Hg)	2.1 (0.4 to 3.7)	0.012	1.8 (0.4 to 3.2)	0.009	0.100
Body Mass Index (m.kg−2)	1.4 (0.8 to 2.1)	<0.0001	0.7 (0.2 to 1.3)	0.005	0.796
Waist Circumference (cm)	3.1 (1.3 to 4.9)	0.001	1.5 (0.02 to 3.0)	0.046	0.547
Body Fat (%)	1.8 (1.1 to 0.025)	<0.0001	0.6 (0.06 to 1.2)	0.030	0.475

N = 317. Data presented as β coefficient and 95%CI for change in risk factor per 100-minute change in sedentary/sitting time, adjusted for age, sex, ethnicity, environment and socio-economic status and smoking. P-values values are given for β values for each measurement method and for the interaction between regression coefficients derived from accelerometer vs IPAQ measurements.