Cutoff for a paper "in progress" on CV I currently work at a research org, and will be applying to PhD programs soon. For my CV, I am a co-author on a few publications that I'll be able to add, but have been recommended to add some in-progress or under review reports. 

While "under review" is pretty straightforward, I'm curious what the cutoff should be for a report that is "in progress"? I have some projects that still have a year remaining, but we've written roughly half of the report. For others, we have less time remaining but have only written the introduction, or something like that. I'm guessing people will have very different opinions here, looking forward to seeing what you all think.
As an applicant to a PhD program, you want to demonstrate that you have been involved in projects that have lead to publishable results. It is common in my field (let's call it neuroscience today), for junior researchers to list in prep manuscripts. As to what constitutes an in prep manuscript, you should list anything that has a large enoguh scope that you can confidentially discuss the research methods, results, analysis, conclusions and implications. If you can do that, it doesn't matter if you have anything written (although if you are that far along, you should be writing it up).