Sushmita, who was lying 25th after the completion of five disciplines with 3774 points, managed to add 1209 points from the last two and finished last in the 26-athlete event on Sunday.
Jessica Ennis of Great Britain cliched the title with 6731 points in the seven-event competition.
In javelin throw, Sushmita managed to cover 36.03m to fetch 591 points — which is worse than her current year’s best performance of 39.17m.
It was followed by another disappointing show in the 800m event, where Sushmita clocked 2:36.13 to pocket 618 points but it was not enough to improve her standing in the final tally.
Sushmita eventually finished with a total of 4983 points.
Another Indian, Babubhai Panucha created a national record in 20km walk race though he finished 20th in a field of over 50 athletes by clocking 1:23:06 in the opening day of the championship.
India is being represented by six athletes in the championship, including women discus throwers Krishna Poonia, Seema Antil and 400m hurdles runner Joseph Abraham, who was disqualified on Sunday.
Source: Hindustan Times