Prevalence of nutritional outcomes (child stunting and/or maternal overweight) in mother–child dyads (n 3676) at the household level, National Demographic and Health Survey of Children and Women, Brazil (PDNS), 2006–2007 (NM/NC, mother with normal weight and child with normal height; NM/SSC, mother with normal weight and short-stature child; OM/NC, overweight mother and child with normal height; OM/SSC, overweight mother and short-stature child – double burden of malnutrition)