Bar chart showing number of perpetrators aged 15 and older per 1000 residents per foreign-born population for the years 2010–2013, according to Statistics Norway. Each country of origin has four bars, with M1 (green) representing the proportion of perpetrators unadjusted for socioeconomic factors, M2 (purple) symbolizing adjustment for age and gender, M3 (yellow) adjustment for residence, and M4 (blue) adjustment for employment. Over-representation is largely dependent on the M2-M4 variables, and drops significantly when they are taken into consideration.[1]