First of all thanks a lot! It is definitely a good start.
But, if I set in your code the window instead of "begin-6" to a longer period, say "begin-31" than the window will be overwritten by the previous employment spells. In addition, it also does not count the number of weeks correctly until a previous emloyment spells starts.
Does somebody see a solution to the problem?
_______________________
----- Original Message -----
From: "Martin Weiss" <[email protected]>
To: <[email protected]>
Sent: Thursday, May 28, 2009 12:32 AM
Subject: st: Re: how to calculate employment history - panel data
><>
>
> -egen- happily accepts expressions for some of its functions, so let`s try
> and use that...
>
> ***
>
> clear*
>
> input Id spell begin end status:mylabel , auto
> 1 1 12 14 empl
> 1 2 15 46 unempl
> 1 3 47 52 sick
> 1 4 59 66 unempl
> 1 5 70 80 empl
> 1 6 81 88 unempl
> 1 7 89 105 empl
> 2 1 14 21 unempl
> 2 2 55 59 sick
> 2 3 61 109 empl
> 2 4 110 115 unempl
> 2 5 116 200 empl
> end
> compress
>
> bys Id: gen byte newspell=sum((status[_n-1]==1)*(_n!=1))
> bys Id newsp: egen window=total((begin-6)*(_n==_N)*(_n!=1))
> bys Id newsp: /*
> */egen weeks=total((status==2)*/*
> */(begin<=window)*(end>=window)*/*
> */(end-window))
> l, sepby(Id news)
> ***
>
>
> HTH
> Martin
> _______________________
> ----- Original Message -----
> From: <[email protected]>
> To: <[email protected]>
> Sent: Wednesday, May 27, 2009 11:22 PM
> Subject: st: how to calculate employment history - panel data
>
>
>>
>> I have the following panel dataset:
>>
>> Id spell begin end status
>> 1 1 12 14 empl
>> 1 2 15 46 unempl
>> 1 3 47 52 sick
>> 1 4 59 66 unempl
>> 1 5 70 80 empl
>> 1 6 81 88 unempl
>> 1 7 89 105 empl
>> 2 1 14 21 unempl
>> 2 2 55 59 sick
>> 2 3 61 109 empl
>> 2 4 110 115 unempl
>> 2 5 116 200 empl
>>
>>
>> I want now to calculate for each spell and person how many weeks the
>> person has been e.g. unemployed during the past 31 weeks (6 month) when
>> he/she enters employment.
>>
>> The problem is not to calculate the entire weeks spent in unemployment
>> but only the number of weeks during a fixed period of time.
>>
>> Any help or hint would be welcome.
>>
>> Thanks
>>
>>
>>
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>>
>
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