Jim Cramer's Stop Trading! Ruth's Chris Sizzles

Investors concerned about the Friday selloff should "back up the truck and buy health care" stocks, Jim Cramer said on CNBC's "Stop Trading!" segment.

Cramer said concerns about an economic swoon are overdone and that hedge funds may be taking care of light volume Friday afternoon to spook bullish investors.

"It's easy to craft a hard-landing scenario," Cramer said, referring to slow sales at bellwether retailer Wal-Mart WMT and the continuing decline of automakers like Ford F and GM GM. Cramer called Detroit's November car-sales numbers, released earlier Friday, "ghastly."

Still, Cramer said none of this is new, and investors should shake off the negativity to look for an entry point in well-positioned sectors. As he did Thursday, he pointed to the HMOs, the drugmakers and the biotechs as a group that should rally, given its resistance to recession and its attractive multiples.

"Buy what does well when the economy's slow," Cramer advised. He also suggested looking at dividend stocks, saying falling interest rates will leave holders of Treasury bonds with no returns.

Cramer also said he likes Ruth's Chris RUTH, saying CEO Craig Miller has shown he's devoted to making money for shareholders no matter how unpopular that can be at times.