TY - JOUR A1 - Kravdal, Ø. T1 - A simulation-based assessment of the bias produced when using averages from small DHS clusters as contextual variables in multilevel models Y1 - 2006 DO - 10.4054/DemRes.2006.15.1 JF - Demographic Research VL - 15 IS - 1 SP - 1 EP - -20 ER -