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. 2014 Jun 10;9(6):e99294. doi: 10.1371/journal.pone.0099294

Table 3. Caffeine intake regardless of genotype in Parkinson disease case/control in southeastern Swedish population.

PD/Control N Light caffeine intakea Heavy caffeine intakeb OR (95% CI) p-value
PD patient (%) 193 58 (30.0) 135 (70.0) 0.58 (0.39–0.86) 0.007
Control (%) 377 75 (19.9) 302 (80.1) - -
a

Light caffeine intake <237.8 mg/day.

b

Heavy caffeine intake >237.8 mg/day.