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Table 1 Characteristics of the study population

From: UCHL1 S18Y variant is a risk factor for Parkinson’s disease in Japan

 

n (%) or mean (SD)

 

Variable

Cases (N  = 229)

Controls (N = 357)

P-value

Sex (%)

  

0.90

 Male

88 (38.4)

139 (38.9)

 

 Female

141 (61.6)

218 (61.1)

 

Age, years

68.4 (8.7)

66.6 (8.5)

0.02

Onset age, years

65.7 (8.8)

  

Region of residence (%)

  

0.28

 Fukuoka

86 (37.6)

150 (42.0)

 

 Kinki

143 (62.5)

207 (58.0)

 

Ever smoked (%)

  

0.001

 No

167 (72.9)

212 (59.4)

 

 Yes

62 (27.1)

145 (40.6)

 

Caffeine intake, mg/4184 kJ

149.3 (110.8)

194.0 (139.2)

< 0.0001