Tenet Healthcare (THC) reported a 7% jump in revenue Tuesday, its highest gain in several years, as outpatient visits grew. Hospital operator earnings have been on the uptick as more patients are able to pay for services under ObamaCare. The operator of 49 hospitals in 11 states said fourth-quarter earnings were 52 cents per share, under analyst estimates of 68 cents. Revenue was $2.3 billion, just shy of views of $2.4 billion. Tenet shares fell