Effects of Decision Aids on the Participation of South Asian Women in Cervical Cancer Screening

Objectives: To examine the effects of linguistically appropriate decision aids on decisional conflicts, risk perception, clarity of values, screening decisions and screening uptake among South Asian women in Hong Kong Design and subjects: A randomised controlled trial. A sample of 270 South Asian women aged 25-64 will be recruited to one of the two intervention groups or control group. Instruments: A survey will be conducted to collect data on the variables of concern (decisional conflicts, risk perception, clarity of values, screening decision and screening uptake). Interventions: Ethnically match community health workers (CHWs) will deliver the printed or mobile application decision aids to intervention group participants and briefly explain how to use the decision aid. The participants will choose a time and place of their convenience to read the decision aid. The participants will be contacted by CHWs within 2 weeks and asked if they have experienced any problems. Navigation assistance will be given as requested. Main outcome measures: Decisional conflicts, risk perception, clarity of values, screening decision and uptake. Data analysis: The repeated-measure outcomes of risk perception, clarity of values, decisional conflicts and screening decision will be compared between the three groups while adjusting for the stratifying variable (ethnicity) using a generalised estimating equation model, and a multivariable logistic regression with adjustment for ethnicity will be used to compare the screening uptake of the three groups. Expected results: The decision aid will clarify the participants' values and help them to make screening decisions and increase the uptake.