modified {codebook}

How many surveys were modified?

Description

Just a simple to check how many times a survey (e.g. diary) has expired (i.e. user missed it). It defaults to checking the "expired" variable for this.

Usage

modified(survey, variable = "modified")

Arguments

survey

which survey are you asking about?

variable

which variable should be filled out, defaults to "modified"

Examples

survey <- data.frame(modified = c(NA, "2016-05-29 10:11:00", NA))
modified(survey = survey)