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Origin and emphases of slum definitions
| Name | Origin | Empirical generation | Legality | Density | Housing | Water | Sanitation |
|---|---|---|---|---|---|---|---|
| Census | 2001 Census of India | Variable included in the NFHS-3 | X | X | X | X | X |
| NFHS | Survey enumerator observation | Variable included in the NFHS-3 | X | X | X | X | |
| UN | Household questionnaire | Aggregated to the primary sampling unit level | X | X | X | X | |
| Committee | Household questionnaire | Aggregated to the primary sampling unit level | X | X | X |
