The Australian Longitudinal Study on Women's Health: 1921-26 cohort ('Old age') Survey 6 data, 2011

This study is the sixth survey of the 1921-26 cohort and so is related to the five earlier surveys from this cohort. ALSWH began collecting information from them when they were already older women. In 1996, more than 12,000 women aged 70-75 years joined the ALSWH and in survey 6 they were between 85 and 90 years old. Of women from the original 1921-26 cohort in 1996, 93% responded to Survey 2 in 1999, 88% to Survey 3 in 2002, 87% to Survey 4 in 2005, 81% to Survey 5 in 2008 and 81% to this survey in 2011 (4,055 participants). Following this survey, from November 2011 on, shorter surveys containing a set of core questions were mailed to the 1921-26 cohort every six months after the return of the previous survey.