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# Re: st: Time-splitting problem

 From Morten Støver To statalist@hsphsun2.harvard.edu Subject Re: st: Time-splitting problem Date Tue, 08 Feb 2011 12:31:26 +0100

```It worked. Thanks a lot!

Maarten buis wrote:
```
```--- On Tue, 8/2/11, Morten Stover wrote:
```
```I'm doing an analysis where I want to split up the follow
up-time in three parts. So my original model is like this:
xi: xtmelogit up KJONN dev_lag1 year_92 year_92_kv, ||
bosted:, covariance(independent) || year:,
covariance(independent) or variance

My time-variable is year_92 and goes from 0 to 15, and I
guess the code (for the first part) should be
if year_92==0 | year_92==1 | year_92==2 | year_92==3 |
year_92==4 | year_92==5
```
```
I see three opportunities to write this shorter and easier
to read (there may be more):

if inlist(year_92, 0, 1, 2, 3, 4, 5)

if year_92 <= 5

if inrange(year_92, 0, 5)

```
```My problem is that I really don't know where to put it, and
whatever I try, I get "option if not allowed r(198);"
I am using Stata10
```
```
You put it before the || and the comma:

xtmelogit up KJONN ... if ...  || ... ,  ...

```
*-------------------- begin example ------------------ webuse bangladesh, clear
```xtmelogit c_use urban age child* if age > -12 ///
|| district: urban, cov(unstruct)
*-------------------- end example --------------------
```
(For more on examples I sent to the Statalist see: http://www.maartenbuis.nl/example_faq )
```
Hope this helps,
Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

http://www.maartenbuis.nl
--------------------------

```
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```
```
--
Morten Støver
MA, PhD Student
Department of Public Health and General Practice
```
Faculty of Medicine Norwegian University of Science and Technology
```Medisinsk teknisk forskningssenter
N-7489 Trondheim
Tel +47 73597525

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```