The nation's economic growth was slower than initially estimated in the fourth quarter of calendar 2013, the government said in a revision Monday, adding to concern the economy may retreat at a faster pace after the April 1 consumption tax hike.

The world's third-largest economy expanded by an annualized 0.7 percent in price-adjusted terms in the three months through December, downgraded from the initial estimate of 1.0 percent, due to weaker growth in capital spending and private consumption, the Cabinet Office said.

The October-December expansion in real gross domestic product, the total value of goods and services produced at home, translated into a 0.2 percent increase from the previous quarter.