Finally, the opt-out status variable is a "black box" in our analysis – it does not measure to what extent either the number of nurse anesthetists or physician anesthesiologists, or their typical workloads, actually changed as a result of the implementation of the opt-out policy.
Greening has decided that the UK will be opting out of this opt-out.
This indicates that there are gaps in the implementation of the routine opt-out testing strategy, particularly in private facilities.
These three time points were chosen to coincide with other routine healthcare activities at the jail in order to simulate the future implementation of a routine opt-out HIV testing protocol.
Objectives: To compare HIV testing rates before and after the implementation of an opt-out policy.
Following the implementation of routine opt-out approach a significant improvement in acceptability has been reported with rates of testing ranging from 55%to100%0% [ 4, 7- 9].
Having answered the critics' concerns about the impact of an opt-out system on the donation rate and patients' autonomy, we believe that it is time to initiate discussion about implementation of an opt-out policy among the policymakers and the general public in Hong Kong.
Fourth, the high uptake of HTC observed may be explained by implementation of opt-out HTC, couples' HTC, and male partner involvement strategies in ANC clinics.
In a context where the implementation of opt-out testing approaches has been criticized for compromising preventive counselling and processes of consent [ 22- 24], the above studies provide hope that opt-in approaches with high standards of consent and counselling may yield high test rates if one avoids public exposure experienced at public testing sites.
However, the strong desire of most women to test for HIV so as to protect their children from HIV infection further complicates the implementation of opt-out option in practice as those who may choose not to test may be perceived or made to feel as 'not good mothers' or 'acting against their own health'.
