Is geomagnetic activity a risk factor for XXXX in @entity302 ?

@entity1 @entity944 @entity302 @entity35 @entity204
OBJECTIVE: To test the hypothesis that @entity944 ( @entity944 ) in @entity302 is related to geomagnetic activity. BACKGROUND: Prior studies presume that geomagnetic activity (with average amplitudes above 50 nanotesla [nT]) is associated with @entity944 in @entity302 @entity1 @entity1 and in @entity302 @entity35 . METHODS: In a retrospective study, 46 @entity302 @entity1 with definite @entity944 were compared with 108 @entity302 @entity1 with @entity204 ( @entity204 ) who died between 1981 and 1992. A complete postmortem examination was performed in all cases. The time of the day and date of @entity204 , as well as two international geomagnetic indices concerning Bartels' planetary 3-hour signs (Kp) and the mean planetary daily amplitudes (Ap) at time of @entity204 , were assessed. RESULTS: Among 45 @entity944 individuals, the local time (37.8%) and the universal time of @entity204 (35.6%) peaked within the critical period between 3 to 9 AM. However, the @entity944 and @entity204 group did not substantially differ in regard to the distribution of local or universal time of @entity204 (p > 0.2, Fisher test). Neither the Kp signs at @entity204 and 2 hours before @entity204 nor the Ap values showed considerable differences between the @entity944 and @entity204 series (p > 0.2, Mann-Whitney test). Merely 4.3% of @entity944 @entity1 and 3.7% of @entity204 @entity1 were associated with Ap indices above 50 nT (p > 0.2, Fisher test). CONCLUSION: The results do not support the hypothesis that geomagnetic activity is related to occurrence of @entity944 in @entity302 @entity1 .
