[time-nuts] Time-zones and World time..

[Chuck Harris]

Bruce Griffiths wrote:
> Chuck Harris wrote:

...

>>
>> It was recently reported that the onset of DST coincides with an
>> increase in heart attacks, and the return to standard time coincides
>> with a decrease in heart attacks.  Yet another reason to ditch
>> Daylight Savings Time.
>>
>> -Chuck Harris
>>
>>   
> Such "effects" are somewhat suspect as there is unlikely to have been
> any comparable control group not subject to DST.
> Also disentangling seasonal effects from possible DST related effects is
> somewhat problematic.

Correlation not being equal to causation always causes some lay folk
problems.  Though no one said that the DST shift caused the increase;
it would be interesting to know if when the US changed its DST dates,
the effect followed the change.

-Chuck Harris