2.27. Secondary outcomes include a 3 day frequency / volume chart, infection, and health-seeking behaviour (unscheduled clinic, A&E or GP visits). Secondary outcomes also include Quality of life / bother assessment using the BPH Impact Index,[24] (appendix 5.), Short Form-36 - SF-36 (appendix 7.) and the Illness Perception Questionnaire - IPQ (appendix 8.).