Regardless, I find it odd that they started sending out decisions at the end of the day today. No point in over-stressing their process of notifying everyone when this year has been different than the past when it comes to interview dates and such. Who knows what news could come in the mail this week!
Where are you getting that 53/270 figure? On their site, they report total grad applicants as masters + certificate + phd as one group. Typically if they have ~50 matriculated, I would imagine they accept closer to 2x.
I would not stress too hard. I still haven't heard back yet either but I am still feeling good bc I know my interviews went really well. One of the PI's that interviewed explicitly stated that he made a strong recommendation to the admissions committee for me. Don't lose hope! It look like they sent out these offers late in to the business day so who knows, could be more tomorrow.
Ahhh okay. I wouldn't worry too much as no one has yet to update the results page just yet, and sinai admits a good amount of students each year. I would expect at least some activity on that page if decisions were sent out already.