A couple of questions..I'm working on my TMDSAS right now and AMCAS later but figure this will apply to both anyways.
1. I was in a clinical rotation program my junior year of high school (Fall 2006-Spring 2007) where I spent ~50 hours in a nursing home working towards my CNA (certified nurse assistant) certification, which was a performance and written based exam I passed at the end of the year. I didn't work as a CNA though. I don't really have a valid reason for not working as a CNA other than I didn't really enjoy being in a nursing home and what that work entailed (I dealt with it for the other rotations) so should I list it? I also spent 30 hours each in 3 different rotations (ED, CCU, cardiology). My involvement in each of these rotations varied. Should I list all of this under clinical experience? As one activity? Or was this too long ago? I also talked about one of my experiences in the ED in my PS.
2. One of the organizations I was in facilitated the shadowing of a variety of physicians...I spent 20 hours/month on 3 different rotations but I shadowed 5 different physicians for 4 hours each...should each of these be individual or what? Right now I have one rotation listed as: Pediatric Shadowing Rotation, and in the description I just listed 4 hours with specialty x, 4 hours with specialty y....etc. Do I need to describe more than that (like what I learned from each one) or is the listing enough? I have around 80 hours and 4-5 entries of shadowing but a bit more than half of it was in small intervals like I mentioned.
I've never seen the TMDSAS application or read its directions, so my comments will apply to AMCAS only:
1) HS activites don't count for much. You're expected to have more recent clinical experience since you've gained a more mature perspective. When there is something from the HS years you want to share, it's better to refer to it in the PS as part of your path to medicine. Or to tack mention of it onto a more recent activity where you maybe use the skills learned during a volunteer experience. If you have zero additional clinical experience, then I'd say go ahead and list it on its own under Other and discuss the clinical experience gained in each venue, focusing on the patient interaction (hoping adcomms don't notice how old the dates are).
2) a) All the shadowing is usually listed in one space (unless one of them was far more intense and impactful and you have a lot to say) but the title you give it should be inclusive of everything in the space, eg, "Pediatric, Internal Medicine, and Surgery Shadowing." Description and reflection are not needed. Since your shadowing was done under an umbrella organization, you can use that for a contact rather than providing it for each doc (which saves space). For each specialty, you might mention the name of one doc only and add, "and four other Pediatricians on staff at XXX Hospital: a cardiologist, pulmonologist, neonatologist, ...."
b) Alternatively, if you have the space to devote to three listings, one for each category of doc, you can do that and provide more description and maybe something interesting you saw that was impactful.
At the end of the space (or each space) give a grand total of shadowing hours.
This represents two ways of organizing the information, but there are other possibilities, too. There is no one correct way to do it. Your choice may depend on the space you have to devote and what you'd like to reflect on, if anything.
Sector9 has experience with TMDSAS and may comment further.