A bed (50) for a person is provided, the bed (50) having a head (52), a foot (54), and sides (56, 58). The bed (50) includes a frame (62, 300) and a deck (400) carried by the frame (62, 300). The deck (400) includes an upper deck portion (414) and a central, longitudinal recess (456) in the upper deck portion (414), the recess (456) being defined by a lower deck portion (430) and walls (438) connecting the upper and lower deck portions (414, 430). In addition, the bed (50) includes a mattress (550) having a planar, upwardly-facing patient surface (552), side portions (580) resting on the side deck portions, and a central projection (576) extending downwardly into the recess (456). The bed (50) also includes a first longitudinal deck section (404) coupled to the deck (400) to pivot about a pivot axis above the lower deck portion (430) between a generally horizontal position and a tilted position.