The government said Monday its leading, coincident and lagging economic indexes all slipped below the boom-or-bust line of 50 percent in November for the first time in 23 months.

The Cabinet Office said it had revised down its leading economic index for November to 33.3 percent from a preliminary 57.1 percent, pushing it below the crucial line for the first time in six months.

The office traced the downward revision to minus figures in the inventory index and machinery orders, which were not available in the preliminary report.