A changing table is mounted on the frame of a play yard to be vertically adjustable in operative height and pivotally movable between operative and inoperative positions. The frame of the changing table is provided with a downwardly extending guard member that extends across the opening between the frame of the changing table and the frame of the play yard to prevent a child's head from being trapped in the opening. The use of the guard member enables the changing table to be moved through a greater vertical range of operative positions without violating ASTM standards regarding the passage of probes through frame openings. The height adjustment mechanism is mounted within the vertical frame member of the play yard and the vertical mounting member of the changing table to allow the changing table to be raised and lowered with respect to the upper frame members of the play yard.