Aug 16 (Reuters) - Sonic Healthcare Ltd SHL.AX
* FY profit after tax from ordinary activities attributable to members $427.8 million, down 5.2 percent
* FY revenue from ordinary activities $5.12 billion up 1.4%
* final dividend 46 cents per share
* In FY 2018, effective tax rate is expected to be approximately 25%
* In FY2018, net interest expense is expected to increase by 10-15% from 2017 level of A$65m on a constant currency basis
* "expects EBITDA growth of 6-8% for 2018 on a constant currency basis over the 2017 underlying EBITDA of A$889m"