Ambulance data | Emergency department data | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|

Case | Year | Day | Hosp | Birth year | Birthday | Sex | Case | Year | Day | Hosp | Birth year | Birthday | Sex |

From past experience or calculations using the larger list, we might assume that: (1) About 90% of injured patients brought by ambulance will generate an emergency department record, so the prior probability of a match between records on the two lists might be about 0.045 (equation 6), and the prior odds (equation 1) about 0.047. (2) The chances that records truly from the same event will have the same admission year, admission date, hospital, birth year, birth date, and sex (the M probabilities) might be 0.99, 0.95, 0.99, 0.95, 0.99, and 0.95 respectively. (3) The chances that variables would match for randomly selected records (the U probabilities) might be 0.50 for admission year, 0.0027 (1/365) for admission date, 0.4 for hospital X or Y, 0.2 for hospital Z, 0.01 for birth year, 0.0027 for birth date, 0.60 for males, and 0.40 for females. | |||||||||||||

A01 | 01 | Jan01 | X | 1950 | Jan21 | M | E01 | 01 | Jan01 | X | 1950 | Jan21 | M |

A02 | 01 | Jan01 | X | 1950 | May01 | F | E02 | 01 | Jan10 | Z | 1987 | Jul17 | M |

A03 | 01 | Jan10 | Y | 1975 | Dec27 | E03 | 01 | Feb23 | X | 1992 | Oct19 | M | |

A04 | 01 | Aug13 | X | 1977 | Apr29 | F | E04 | 01 | Apr22 | Y | 1979 | May09 | M |

A05 | 01 | Sep12 | Y | 1980 | Feb16 | F | E05 | 01 | May02 | X | 1929 | Nov12 | F |

A06 | 01 | Dec31 | Z | 1919 | Sep16 | M | E06 | 01 | May23 | Y | 1964 | Dec01 | M |

A07 | 02 | Feb02 | X | 1924 | Mar26 | F | E07 | 01 | Jun01 | X | 1950 | May01 | F |

A08 | 02 | Jun10 | Y | 1951 | Mar29 | M | E08 | 01 | Aug14 | X | 1977 | Apr29 | F |

A09 | 02 | Aug06 | Y | 1953 | Apr17 | E09 | 01 | Sep12 | Y | 1980 | Feb16 | F | |

A10 | 02 | Sep21 | Z | 1956 | Jun03 | F | E10 | 01 | Oct21 | Y | 1985 | Mar12 | M |

E11 | 02 | Jan01 | Z | 1919 | Sep16 | M | |||||||

E12 | 02 | Jan10 | Y | 1975 | Dec27 | F | |||||||

E13 | 02 | Feb02 | X | 1924 | Mar26 | F | |||||||

E14 | 02 | May16 | X | 1924 | Oct12 | M | |||||||

E15 | 02 | Jun10 | Y | 1951 | Mar29 | M | |||||||

E16 | 02 | Jul04 | Z | 1982 | Jun12 | M | |||||||

E17 | 02 | Aug05 | Y | 1953 | Apr17 | M | |||||||

E18 | 02 | Aug06 | Y | 2002 | Apr17 | F | |||||||

E19 | 02 | Sep21 | Z | 1956 | Jun03 | F | |||||||

E20 | 02 | Nov22 | X | 1917 | May29 | M |