| Year |
Source |
Place |
Area |
Prevalance (%) |
| Urban |
Rural |
| 1971 |
Tripathyetal. |
Cutttack |
(Central) |
1.2 |
|
| 1972 |
Ahujaetal. |
NewDelhi |
(North) |
2.3 |
|
| 1979 |
Guptaetal. |
Multicentre |
|
3.0 |
1.3 |
| 1979 |
Johnsonetal. |
Madurai |
(South) |
0.5 |
|
| 1984 |
Murthyetal. |
Tenali |
(South) |
4.7 |
|
| 1986 |
Patel |
Bhadran |
(West) |
3.8 |
|
| 1988 |
Ramachandranetal. |
Kudremukh |
(South) |
5.0 |
|
| 1989 |
Kodalietal. |
Gangavathi |
(South) |
|
2.2 |
| 1989 |
Raoetal. |
Eluru |
(South) |
|
1.6 |
| 1992 |
Ramachandranetal. |
Madras |
(South) |
8.2 |
2.4 |
| 1997 |
Ramachandranetal. |
Madras |
(South) |
11.6 |
|
| 2000 |
Ramachandranetal. |
Kerala |
(South) |
12.4 |
2.5 |
| 2001 |
Misraetal. |
NewDelhi |
(North) |
10.3 |
|
| 2002 |
Mohanetal. |
Chennai |
(South) |
12.1 |
|
| 2004 |
Shaukatetal. |
National |
|
5.6 |
2.7 |
| Note:DifferentSampleSelectionCriteria
Source:Ramchandranetal.(2004) |
|
