How does OPM combine survey data for the DC area and for COLA areas with multiple survey areas?
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) Washington, DC, area. For each survey item except shelter, OPM averages separately the prices collected in each of the DC survey areas identified in § 591.215(a) and then averages these average prices together using equal weights to compute an overall average by item for the DC area.
(b) COLA areas with multiple survey areas. OPM computes weighted average indexes at the item, PEG, MEG, and/or overall level by using the corresponding indexes and Federal employment weights from each survey area within the COLA area.
[67 FR 22340, May 3, 2002, as amended at 69 FR 59763, Oct. 6, 2004]
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