Table 3.
Subgroup analyses for association between blood hemoglobinA1c and HRV by adding “CVD history” as stratification variables.
| Variables | n | LF-HRV | HF-HRV | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Sβ | 95% CI | P Value | P # | Sβ | 95% CI | P Value | P # | |||
| Ever had DM (YES) | 108 | -0.097 | (-0.177, -0.017) | 0.019 | 0.029 | -0.118 | (-0.208, -0.027) | 0.012 | 0.019 | |
| Ever had DM (NO) | 820 | 0.043 | (-0.103, 0.189) | 0.565 | 0.095 | (-0.059, 0.248) | 0.228 | |||
| Ever had heart disease (YES) | 84 | -0.102 | -0.337, 0.134 | 0.392 | 0.901 | -0.058 | -0.305, 0.189 | 0.643 | 0.916 | |
| Ever had heart disease (NO) | 884 | -0.091 | -0.154, -0.029 | 0.004 | -0.072 | -0.138, -0.006 | 0.032 | |||
| Ever had hypertension (YES) | 318 | -0.133 | -0.239, -0.027 | 0.014 | 0.419 | -0.102 | -0.210, 0.007 | 0.066 | 0.854 | |
| Ever had hypertension (NO) | 610 | -0.047 | -0.122, 0.027 | 0.210 | -0.043 | -0.122, 0.035 | 0.278 | |||
| Ever had TIA or stroke (YES) | 30 | -0.468 | -0.882, -0.053 | 0.029 | 0.063 | -0.343 | -0.743, 0.058 | 0.090 | 0.172 | |
| Ever had TIA or stroke (NO) | 898 | -0.070 | -0.132, -0.009 | 0.025 | -0.044 | -0.109, 0.021 | 0.185 | |||
| Ever had cholesterol problems (YES) | 394 | -0.166 | -0.210, -0.023 | 0.015 | 0.904 | -0.095 | -0.194, 0.004 | 0.059 | 0.464 | |
| Ever had cholesterol problems (NO) | 534 | -0.059 | -0.140, 0.022 | 0.156 | -0.023 | -0.109, 0.062 | 0.593 | |||
Adjusted for age, gender, BMI, ever smoker, number of drinking years and exercise.
P#: P interaction.
DM, diabetes mellitus; CVD, cardiovascular disease; LF-HRV, low frequency-heart rate variability; HF-HRV, High frequency heart rate variability; TIA, transient ischemic attack; BMI, body mass index.