The US economy contracted in the beginning of the year at a much faster pace than previously reported, after new data factored in much weaker consumer spending.

Gross domestic product, the broadest measure of economic output, registered an annualized rate of -0.5% from January through March, the Commerce Department said Thursday in its third and final estimate. That’s worse than the 0.2% decline reported in the second estimate. GDP is adjusted for seasonal swings and inflation.

The latest estimate showed that consumer spending — the lifeblood of the US economy — was tepid in the beginning of the year. Spending in the first quarter grew at a rate of just 0.5%, down from 1.2% in an earlier estimate. That’s the weakest rate in more than four years.