I'm trying to understand how you got 200 from this report. On page 2, I see this paragraph about the Missing Person Circumstances (MPC) field in their database

I'm trying to understand how you got 200 from this report. On page 2, I see this paragraph about the Missing Person Circumstances (MPC) field in their database: "Of the 647,435 records entered in 2016, the MPC field was utilized in 315,995 (48.8%). When the MPC field was utilized in 2016 entries, 303,237 (96%) were coded as Runaway, 2,107 (.7%) as Abducted by Non-custodial Parent, 303 (.1%) as Abducted by Stranger, and 10,348 (3.3%) as Adult - Federally required entry." So it looks like one should take the number 303 for "Abducted by Stranger" and perhaps, since only 48.8% of records had this field populated, extrapolate to about 620 cases. Does that sound right, or should it be 200 based on a different reasoning? Of course, 620 cases is still a pretty small number. I just wanted to understand where your numbers came from. How did you get the figure of 90% making it home safely, and how did you calculate the probability of 0.00027%?