Table 6 Associations between cardiometabolic health markers and time in bed (TIB) regularity at midlife in a population-based birth cohort (N = 3698) according to multivariate linear regression analyses

Markers displaying a linear relationship time in bed regularity

WC (cm)

Model 1

0.223 [0.1. 0.346]

Model 2A

0.196 [0.071, 0.321]

Model 2B

0.111 [− 0.014, 0.235]

BMI (kg/m²)

Model 1

0.131 [0.036. 0.226]

Model 2A

0.110 [0.013, 0.207]

Model 2B

0.042 [− 0.054, 0.138]

SBP (mmHg)

Model 1

0.107 [− 0.028. 0.242]

Model 2A

0.114 [− 0.021, 0.249]

Model 2B

0.090 [− 0.043, 0.224]

DBP (mmHg)

Model 1

0.183 [0.053. 0.314]

Model 2A

0.175 [0.044, 0.306]

Model 2B

0.112 [− 0.018, 0.242]

Fasting insulin (mmol/L)

Model 1

0.039 [0.011. 0.068]

Model 2A

0.035 [0.006. 0.064]

Model 2B

0.014 [− 0.014. 0.043]

2− h insulin (mmol/L)

Model 1

0.037 [0.015. 0.06]

Model 2A

0.033 [0.01. 0.056]

Model 2B

0.012 [− 0.011. 0.036]

Fasting glucose (mmol/L)

Model 1

0.158 [0.002. 0.315]

Model 2A

0.090 [− 0.065. 0.246]

Model 2B

0.147 [− 0.01. 0.304]

2− h glucose (mmol/L)

Model 1

0.091 [0.025. 0.156]

Model 2A

0.080 [0.014. 0.146]

Model 2B

0.042 [− 0.023. 0.108]

Triglycerides (mmol/L)

Model 1

0.057 [0.022. 0.092]

Model 2A

0.049 [0.013. 0.085]

Model 2B

0.023 [− 0.013. 0.059]

Total/HDL cholesterol ratio

Model 1

0.046 [− 0.018. 0.109]

Model 2A

0.031 [− 0.033. 0.096]

Model 2B

− 0.008 [− 0.072. 0.056]

LDL/HDL cholesterol ratio

Model 1

0.030 [− 0.012. 0.072]

Model 2A

0.022 [− 0.021. 0.064]

Model 2B

− 0.002 [− 0.044. 0.04]

Body fat (%)

Model 1

0.080 [0.025. 0.134]

Model 2A

0.064 [0.008, 0.120]

Model 2B

0.004 [− 0.053, 0.060]

Fat mass (kg)

Model 1

0.055 [0.018. 0.092]

Model 2A

0.046 [0.008, 0.083]

Model 2B

0.013 [− 0.025, 0.051]

Visceral fat area (cm²)

Model 1

0.057 [0.019. 0.095]

Model 2A

0.048 [0.009, 0.087]

Model 2B

0.014 [− 0.023, 0.053]