I agree with the above.
FREIDA is not necessarily that accurate, although for the sheer frequency of overnight call (i.e. Q3 or Q4) it might be more accurate than for other things/data. The work hours quoted on there are notorious for being wrong.
I think the hours and intensity of call is more related to the specialty than the particular program, although I do think there are some specialties (for example family practice and IM) where there is considerable variability from program to program. I agree w/the advice above about perhaps considering a larger program, because it does provide more of a cushion for times when someone is out/off due to personal or family illness. Also, I think just the mindset and attitudes of the program where you match matters a lot, and that's something you can't know until you go visit. You may have better luck @community programs vs. some university programs, especially if you do IM or fp or peds...U. programs tend to have more ICU, etc. and perhaps busier calls, though it depends on the particular program.
I went to a large university IM program and I personally can't ever imaging someone taking a sick day unless they were personally in the hospital...so culture of a program matters...taking/being off just wasn't acceptable in my program. There was a backup call system but in general it wasn't used except for very dire emergencies, because if/when a resident was out, someone got pulled from an outpatient clinic month to take his/her call (and without ever being repaid for it later, or trading, etc.). Needless to say people didn't love getting called in for backup call...though we would come in and not complain about it. We did have someone who was ordered to be on bed rest due to pregnancy complications, and it was dealt with by changing folks' schedules...would have been rough to accommodate @a smaller program. However, she was one of the PD's favorites and it was a documented medical condition, and I imagine a program wouldn't dare come down on someone for a pregnancy-related medical problem due to potential liability.