Stata 11 help for inrange() help inrange() ------------------------------------------------------------------------------- Title [D] functions -- Functions Programming function inrange(z,a,b) Domain: all reals or all strings Range: 0 or 1 Description: returns 1 if it is known that a < z < b; otherwise, returns 0. The following ordered rules apply: z > . returns 0. a > . and b = . returns 1. a > . returns 1 if z < b; otherwise, it returns 0. b > . returns 1 if a < z; otherwise, it returns 0. Otherwise, 1 is returned if a < z < b. If the arguments are strings, "." is interpreted as "". Also see Manual: [D] functions Help: [D] functions, [D] functions (programming functions)