Table 1

Characteristics of the study population
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

Miyake et al.

Miyake et al. BMC Neurology 2012 12:62   doi:10.1186/1471-2377-12-62

Open Data