A third source of information is based on observations derived from extensive field visits by the mission team and on-site interviews. The fourth source of information is based on official figures provided by the Government to the on the last day of the mission. They are provided in Annex 1 – Households Affected by Operation Restore Order and "Murambatsvina". The present assessment is based on Government figures while taking into account other indicators, such as the percentage of the population engaged in the informal economy, reports from various stakeholder organizations and academic research. The figures are broken down into two broad categories – those directly affected and those indirectly affected through knock-on effects and the inter-relationships that characterize the survival mechanisms of the poor and disadvantaged segments of the population. 3.2.2 Population directly affected by Operation Restore Order Official Government figures released on 7 July 2005 revealed a total of 92,460 housing structures that had been demolished directly affecting 133,534 households46 . At the same time, the structures of 32,538 small, micro and medium-size enterprises were demolished. Based on average household size derived from the 2002 census, and authoritative studies on the informal economy, the population having lost their homes can be estimated at 569,685, and those having lost their primary source of livelihood at 97,614.47 46 For the purpose of this report, households include conventional family structures, multi-generational and/or extended family structures and individuals. The average family size has been taken to be 4.2 persons. 47 Official sources have intimated that most demolished structures were occupied by 1 or 2 people. This appears to be highly improbable given the significant number of households affected which is likely to be a representative sub-sample of national and provincial averages. Furthermore, independent studies including Government surveys and policy statements systematically refer to overcrowding in informal settlements as a major issue. Some surveys have indicated 4-6 people per room as the norm, with some shacks harbouring up to 8 people. 32