Academic journal article Indian Journal of Psychiatry

Suicide Lethality Scale: Concerns regarding Validity and Scoring

Academic journal article Indian Journal of Psychiatry

Suicide Lethality Scale: Concerns regarding Validity and Scoring

Article excerpt

Byline: Devavrat. Harshe, Naresh. Vadlamani, Harish. Tharayil, Chittaranjan. Andrade

Sir,

Kar et al .[sup][1] described the development of an instrument to measure the lethality of a suicide attempt. We have some concerns about the scoring of the instrument that they proposed, as well as about its face and content validity:

*The minimum score on this scale is 5, not 0. There are known disadvantages of instruments that do not have 0 as the lowest rating; that is, the instruments that are not ratio scales [sup][2] *The wording of many items requires improvement. For example, Item B could have been anchored as very high, high, moderate, low, and very low chances of rescue without requiring the grammatically awkward phrasing in the scale as it stands *The above notwithstanding, Item B does not measure lethality of the suicide attempt; it measures suicide intent *Item D is superfluous because there would be a 1 to 1 correspondence between the scoring of this item and the scoring of Item C. …

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