“…A number of studies indicated that child age was not associated with parental stress ( Byiers et al, 2014 ; Fidler et al, 2000 ; Sarimski, 2010 ; Wulffaert et al, 2010 ), life satisfaction ( Shivers et al, 2016 ), strain ( Jacob et al., 2017 ; Luescher et al., 1999 ) or quality of life ( Laurvick et al, 2006 ) in a number of rare genetic syndromes. However, other studies demonstrated an association between increased child age and greater parent stress ( Farmer et al, 2006 ; Hodapp et al, 1997 ; Sarimski, 1997b ; Wulffaert et al, 2009 ).…”