If residents are staying in the hospital overnight every other night they by definition violate the 80 hour work week; most places in compliance have thus had to do away with the q2 for this reason. If you are home with your pagers during call nights or divide up into late/early or night float schedules, it's not really the same thing as a true q2. Q2 was what they had a decade ago before the 80 hour limitation in the most gung-ho of surgical fields. basically meant you slept every other afternoon but otherwise were always in the hospital.