That's just a bad name. This is essentially a nonrandomized unblinded controlled trial using representative sampling. Only two steps below a full RCT unless you

That's just a bad name. This is essentially a nonrandomized unblinded controlled trial using representative sampling. Only two steps below a full RCT unless you suspect foul play. I'm not sure how you'd blind lack of sleep and that's not the point, so the only issue is lack of randomization. Much better than an observational study.