Fig 1.
Search strategy.
Fig 2.
Meta–analysis of RR intervals of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; RR: RR intervals; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 3.
Meta–analysis of SDNN of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; SDNN: Standard Deviation of RR intervals; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 4.
Meta–analysis of RMSSD of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; RMSSD: square root of mean squared differences of successive RR intervals; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 5.
Meta–analysis of pNN50 of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; pNN50: percentage of RR intervals with more than 50 ms variation; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 6.
Meta–analysis of total power of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; TP: Total Power; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 7.
Meta–analysis of the LF of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; LF: Low Frequency; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 8.
Meta–analysis of the HF of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; HF: High Frequency; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 9.
Meta–analysis of LF/HF of type 2 diabetes mellitus patients compared with controls.
-: non reported data (missing SD were also non reported). 95% CI: 95% confident intervals; BMI: Body Mass Index; LF/HF: Low Frequency/High Frequency ratio; T2DM: Type 2 Diabetes Mellitus; SD: Standard Deviation.
Fig 10.
Meta–regression of factors influencing heart rate variability in type 2 diabetes mellitus.
95% CI: 95% confident intervals; RR: RR intervals; SDNN: Standard Deviation of RR intervals; pNN50: percentage of RR intervals with more than 50 ms variation; RMSSD: square root of mean squared differences of successive RR intervals; TP: Total Power; LF: Low Frequency; HF: High Frequency; LF/HF: Low Frequency/High Frequency ratio.