“…Nonresponse is also related to other aggregate-level factors, such as density, crime rate, fear of crime, social disorganization, geographic mobility, and family structure (Couper and Groves 1996;Groves 2006;Couper 1998, 2001;Goyder, Lock, and McNair 1992;Gfroerer, Lessler, and Parsley 1997;Johnson and Cho 2004;Johnson et al 2006;Kim, Smith, and Sokolowski 2006;Kojetin 1994;O'Hare, Ziniel, and Groves 2005;Smith 2002;van Goor, Jansma, and Veenstra 2005;Voogt and van Kempen 2002). As a result, aggregate-level variables are very useful for assessing, understanding, and adjusting for nonresponse bias (brick and broene 1997; Johnson and Cho 2004;Kalsbeek, Yang, and Agans 2002;Kennickell 2005;Montaquila and brick 1997;Nolin et al 2000;Turrell et al 2003).…”