borderline significantp = 0.059
Compared to 48 weeks before drug start, there was a borderline significant difference in the mean zBMI increase in the 48 weeks after drug start among those on TAF who switched from TDF ( p = 0.059); for other groups, the change in zBMI was similar before and after drug start ( p = 0.703, 0.253 and 0.971 for groups 2, 3 and 4, respectively).