While traditional fast-food chains complain waning consumer confidence is hurting sales, Chipotle Mexican Grill Inc. and Panera Bread Co. are ringing up solid results—and they don't even have dollar menus.

The two restaurant chains, which have positioned themselves in the trendy spot between traditional fast food and waiter service, indicated in their earnings reports Tuesday they may avoid the drop in customer traffic some of their competitors are bracing for this year.

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