“…For W1 in 2005-06, NSHAP obtained an overall response rate of 75.5%, resulting in a sample of 3,005 adults aged 57–85 (O’Muircheartaigh, Eckman, & Smith, 2009; Waite et al, 2014a). Five years later in 2010-11 NSHAP re-interviewed 2,261 surviving W1 respondents (as well as 161 W1 non-respondents and 955 spouses and cohabiting romantic partners) for W2 (O’Muircheartaigh, English, Pedlow, & Kwok 2014; Waite et al, 2014b). Data for both waves are collected by an interviewer-administered in-home questionnaire, an in-home biomeasure collection procedure, and a self-administered post-interview questionnaire (leave-behind questionnaire or LBQ).…”