One suggestion was to ask "Have you been on site for more than three days?" only once, then infer that the user travelled the same number of time zones the next two days. This would require a "New site" button on the start screen (in addition to the "Begin" and "Settings" buttons) that asks the time zone travel question in the questionnaire. "New site" should be selected whenever the user travels to a new project site.
Time zone question: This is only relevant for a maximum of three days, so is it possible to only ask the question “Have you been on site for less than three days?” once?
NO – score = 0
YES and time zones <=x, score = +2 for the next three days
YES and time zones >x, score = +4
Thereafter score = +0.
The only thing with this is that it would also require a “New Survey” button or something similar on the home screen. What do you think? I think that this is required anyway because on the first day of a new job the app shouldn’t remember how many hours the operator slept the night before. And simply looking for a missing entry for the previous day won’t work because if a pilot is grounded because of weather for a day they may not bother to complete the form for that day anyway.
Will not be implemented for a few reasons (IAGSA agrees):
The two buttons add complexity for the user because they need to know the difference between "begin" and "new site" and pick the right one.
The two options create the possibility that user mistakenly taps "begin" instead of "new site". When this happens, the user will not be prompted to enter the number of time zones travelled and might end up with a risk score that is too low.
The app already suggests a number of time zones based on yesterday's response to minimize the amount of effort required to answer the question.
One suggestion was to ask "Have you been on site for more than three days?" only once, then infer that the user travelled the same number of time zones the next two days. This would require a "New site" button on the start screen (in addition to the "Begin" and "Settings" buttons) that asks the time zone travel question in the questionnaire. "New site" should be selected whenever the user travels to a new project site.