The proposed study is a randomised trial of different timings and methods of offering a self-completion questionnaire. It will be embedded in an ongoing cohort study. All participants who complete the CAPI (Computer Assisted Personal Interview) will be invited to fill in a self-completion (paper) questionnaire whose contents will include measures of: participation in social activities, including organised structured and informal activities; relationship quality (partners/relatives/friends); loneliness; perceived stress; resilience; quality of life; alcohol intake and a measure of food poverty.