From: Emerging trends and patterns of self-reported morbidity in India: Evidence from three rounds of national sample survey
Sub-Rounds
1995-96
2004
2014
sub-round 1
July - September 1995
January - March 2004
January - March 2014
sub-round 2
October - December 1995
April - June 2004
April - June 2014
sub-round 3
January - March 1996
-
sub-round 4
April - June 1996