A study is conducted to determine factors in solving missing persons cases. The outcome is Y i Y i which is equal to 1 if the i-th missing person case is unsolved and 0 if it is solved. Let covariate X 1 i X 1i be an indicator equal to 1 if the i-th case is female and 0 for male. Let X 2 i X 2i be a categorical covariate of age group for the i-th case. Categories are less than 14 years old (base level/group), between 14 and 19 years old, and older than 19 years