It is estimated that up to half of all fertilized eggs die and are lost (aborted) spontaneously, usually before the woman knows she is pregnant. Among those women who know they are pregnant, the miscarriage rate is about 15-20%. Most miscarriages occur during the first 7 weeks of pregnancy. The rate of miscarriage drops after the baby’s heart beat is detected.
So your bright line should be heartbeat, or at least zygote implantation. This does not significantly affect your conclusions.
The jump from 1e-12 to .5 seems brighter to me than the jump from .5 to .8. (.5 is also historically significant, as only about half of born children would live to see puberty for much of human history.)
From the NIH:
So your bright line should be heartbeat, or at least zygote implantation. This does not significantly affect your conclusions.
The jump from 1e-12 to .5 seems brighter to me than the jump from .5 to .8. (.5 is also historically significant, as only about half of born children would live to see puberty for much of human history.)