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

[Brooke Clarke]

Hi Chuck:

Not all of the U.S. uses DST, so there's a control group.

Have Fun,

Brooke Clarke
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Chuck Harris wrote:
> 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
> 
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