Well, you'd know if your siblings died, but you're right, there's some survivorship bias in the "and I" portion. The main issues, though, are very small sample

Well, you'd know if your siblings died, but you're right, there's some survivorship bias in the "and I" portion. The main issues, though, are very small sample sizes and the difficulty of knowing if people really were "just fine" compared to what they would have been otherwise.