Ratings - Left Behind - Official Nielsen Ratings

Building on its lead-in by 6.7 million viewers (11.5 million vs. 4.8 million) and by 153% in young adults (4.8/13 vs. 1.9/5), "Lost" dominated Wednesday's 10 o'clock hour in Total Viewers (11.5 million) and across the adult demographics: Adults 18-34 (4.1/12), Adults 18-49 (4.8/13) and Adults 25-54 (5.4/14). In fact the ABC drama has won its hour in the key Adult 18-49 sales demographic on all 9 telecasts since entering its new time slot.

* Despite its late time period and declining TV usage levels, "Lost" grew its viewer (11.4 million to 11.6 million) and young adult audience (4.7/13 to 4.9/13) from its first half-hour to its second half-hour.

* "Lost" held all of its overall audience week to week, while growing its delivery among Men 25-54 (4.7/13 vs. 4.6/12) and Women 25-54 (6.2/15 vs. 6.1/15).

* "Lost" improved the hour for ABC over the same night a year ago by 3.8 million viewers and 60% in Adults 18-49 (7.7 million & 3.0/8 on 4/5/06).

Source: Nielsen Media Research (Fast Affiliate Ratings)