LD50 and ED50

Question

LD50 and ED50

18 Feb 2025

Answer :

Word Count : 291

LD50 (Lethal Dose 50) and ED50 (Effective Dose 50) are statistical measures used in biostatistics to assess the toxicity and efficacy of a substance, such as a drug or chemical, on a population.

LD50 refers to the dose of a substance required to cause death in 50% of the test population. This measure is commonly used in toxicology to quantify the toxicity of a substance. It helps researchers determine the level at ____ _____ ________ _______ ________ ___ ____ __________ _____ _________.
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	D⁺	D⁻	Total
T⁺	145	2000	2145
T⁻	15	48000	48015
Total	160	50000	50160

Test Group	16.6	19.8	17.1	17.0	15.6	20.3	24.7	18.5	17.6	22.0
Control Group	23.2	22.0	21.9	16.7	14.2	23.2	24.8	25.5	28.1	21.8

Age Group (Years)	District A		District B
Age Group (Years)	Population	No. of Deaths	Population	No. of Deaths
0 - 5	55,300	385	51,165	805
5 - 15	109,125	410	98,170	510
15 - 35	1,72,050	675	1,68,450	790
35 - 50	1,15,600	1625	1,40,625	990
50 & above	2,65,775	3288	2,40,900	2485

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