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Hi Akash
The choice of 365 days is correct. To choose the structure of the deterministic trend should be guided by the graph of the series.

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Hello
Yes, Published critical values ​​are for a sample size 60. When you install the program have access to the code, and you can modify it to include a new window that takes into account the other sample sizes ...

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Hello Sidtech
In the attachment, you will find the information you're asking

Regards
Prof. RI

Hi
Blanca not the same. The test PPUroot was proposed by Professor P. Perron to overcome some weaknesses of Zivot-Andrews test.

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Hello Blanca I think the Perron-test is much more complete than the ZA-test, as it allows both under the null and the alternative hypothesis, the series Xt is subject to a break, while the ZA-test, under the null hypothesis, only allows a Nonstationary series Xt, without structural breaks. I recomme...