Table 1.
Correlations between clinical features and electrocardiogram parameters.
| Clinical features | Electrocardiogram parameters | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| BMI | Age (years) | Duration (month) | H-Y | RR | PR | QRS | QT | QTc | |
| BMI | 1 | 0.033 | -0.108 | -0.044 | -0.027 | 0.177* | 0.173* | -0.052 | 0.021 |
| Age (years) | 0.033 | 1 | -0.024 | 0.226** | 0.031 | 0.142 | -0.026 | 0.179* | 0.172* |
| Duration (month) | -0.108 | -0.024 | 1 | 0.298** | 0.112 | -0.019 | 0.172* | -0.015 | -0.163 |
| H-Y | -0.044 | 0.226** | 0.298** | 1 | 0.036 | 0.101 | 0.206** | 0.087 | 0.041 |
| Electrocardiography | |||||||||
| RR | -0.027 | 0.031 | 0.112 | 0.036 | 1 | 0.228** | 0.242** | 0.683** | -0.361** |
| PR | 0.177* | 0.142 | -0.019 | 0.101 | 0.228** | 1 | 0.236** | 0.145 | -0.074 |
| QRS | 0.173* | -0.026 | 0.172* | 0.206** | 0.242** | 0.236** | 1 | 0.278** | 0.084 |
| QT | -0.052 | 0.179* | -0.015 | 0.087 | 0.683** | 0.145 | 0.278** | 1 | 0.374** |
| QTc | 0.021 | 0.172* | -0.163 | 0.041 | -0.361** | -0.074 | 0.084 | 0.374** | 1 |
The results indicate Spearman’s rank correlation coefficients (rho).
*, P<0.05
**, P<0.01. BMI, body mass index; H-Y, Hoehn and Yahr scale.