COLUMN-Elder poverty - however you measure it - is not going away

(Corrects paragraphs 7-8 to remove statement that taxes and spending on health insurance are excluded from the Census Bureau's Supplemental Poverty Measure (SPM); both are included in the measure.)

By Mark Miller

CHICAGO, Feb 11 (Reuters) - "Without Social Security, nearly half of seniors would be living in poverty," President Barack Obama said last month, noting the 50th anniversary of the war on poverty. "Today, fewer than one in seven do. Before Medicare, only half of seniors had some form of health insurance. Today, virtually all do."

Is the war on elder poverty over? Fewer older Americans are poor than any other age group - we heard that often in retrospectives on the war on poverty, and it comes up often in debates about possible cuts to programs like Social Security and Medicare.

Fewer seniors fall into the federal government's official measure of poverty than younger Americans. The official poverty rate in 2010 for Americans over age 65 was 9.1 percent, much lower than the 15.1 percent rate for all Americans.

But the numbers mask a worrisome trend: Senior poverty rates are projected to rise in the years ahead. The only question is by how much.

A debate is taking shape in Washington over how to measure elderly poverty rates. Beyond the official numbers, the U.S. Census Bureau publishes a Supplemental Poverty Measure (SPM) that includes non-cash income such as as housing assistance, food stamps or energy subsidies. But some experts say both measures fall short by failing to adequately measure retirement savings.

Taking savings into account wouldn't affect poverty rates much for very low-income households, which tend not to have retirement savings and rely mainly on Social Security. But it would affect the number of older middle-class households considered at risk to be impoverished.

The SPM projects that the senior poverty rate will spike by 72 percent between 2010 and 2040, from 10.4 percent to 17.9 percent, says Karen Smith, a senior fellow at the Urban Institute. But that's misleading, she says, since it misses assets such as retirement saving accounts and housing.

In a new study, Smith and two co-authors use a sophisticated income modeling program developed by the Social Security Administration to project elderly poverty incorporating all factors. That model still shows senior poverty rising in the coming decades, but from a much lower base and on a less dramatic curve - from 5.9 percent in 2010 to 8.5 percent in 2040.

Even if the Census Bureau changes its poverty-measuring yardstick, the factors driving that increase underscore why this is no time to declare a truce in the war on elderly poverty.