Final answer:
A client should be evaluated after administering a PO intervention, especially around the three to six-month mark.
Step-by-step explanation:
When administering a PO intervention, it is important to evaluate the client at regular intervals to assess the effectiveness of the intervention and monitor any changes in their condition.
A good time to evaluate a client after administering a PO intervention would be at around the three to six-month mark.
Studies by Pruitt & Barile (2017) and Smith & Barile (2015) found that stress levels increased for clients between months three and six in the program. By evaluating the client at this stage, evaluators can gain a better understanding of the effects of the intervention and make any necessary adjustments.