Research Article

Interleukin-6 May Contribute to Mortality in Parkinson’s Disease Patients: A 4-Year Prospective Study

Table 1

Characteristics of the investigated patients and the laboratory results in Groups 1 and 2.

Group 1Group 2 level
Valid MedianLower QUpper QRangeValid MedianLower QUpper QRange

Age at baseline (years)1674.172.0 75.528.23764.263.069.129.00.000
Diagnosis (years)169.06.516.122.1378.05.110.018.10.150
IL-6 (pg/mL)162.711.924.514.72371.931.902.314.110.035
TNF-α (pg/mL)167.215.9510.1524.40375.814.428.9014.720.058

IL-6 = interleukin-6.
TNF-α = tumor necrosis factor-alpha.
= nonparametric Mann-Whitney test for independent components.
Significant differences are in bold.