Abbreviations

AFDC

Aid to Families with Dependent Children

AIME

Average indexed monthly earnings

AMW

Average monthly wage

CDR

Continuing disability review

COLA

Cost-of-living adjustment

CPI-U

Consumer Price Index for All Urban Consumers

CPI-W

Consumer Price Index for Urban Wage Earners and Clerical Workers

CPS

Current Population Survey

DI

Disability Insurance

FICA

Federal Insurance Contributions Act

FRA

Full retirement age

HI

Hospital Insurance

IRS

Internal Revenue Service

MBC

Monthly benefit credited

MBR

Master Beneficiary Record

NRC

National Research Council

OASDI

Old-Age, Survivors, and Disability Insurance

OASI

Old-Age and Survivors Insurance

OBRA

Omnibus Budget Reconciliation Act

PIA

Primary insurance amount

QC

Quarter of coverage

SECA

Self-Employment Contributions Act

SGA

Substantial gainful activity

SMI

Supplementary Medical Insurance

SPM

Supplemental Poverty Measure

SSA

Social Security Administration

SSI

Supplemental Security Income

WEP

Windfall Elimination Provision