Quality Adjustment Implicit Quality Indices (IQIs) for the period 2013 to 2015

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These files contain Implicit Quality Indices (IQIs) calculated as part of a quality adjustment review of consumer price statistics. The IQIs have been calculated for the period 2013-2015 with the intention of monitoring the impact of quality adjustment on the indices of each locally collected item of the CPIH/CPI basket. They have been calculated by dividing a Standard Reference Index (an index for which no quality adjustment has been applied) by an index for the same item which has been quality adjusted as usual. The result was then multiplied by 100. The results in these files are only for locally collected items and also exclude items for which no quality adjustment is applied.

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