No. ADHD criteria and low conscientiousness behaviors overlap. Conscientiousness tests combine effort and outcomes usually. Many ADHD criteria are about difficulty.
I don't understand. Is "difficulty" some axis that's independent of "effort" and "outcomes"? Is conscientiousness defined to be the result a person achieves on a particular test, and can you provide a link to that test?
Do you often leave comments like "No. PCR-covid and pulse-oximiter-covid are different diseases. One of them involves having virus genomes in your body and the other one involves having low blood oxygen?"
Difficulty and effort are independent. Some people try to do hard things. Some people don't try to do easy things. Outcomes depend on difficulty, effort, and other factors.
Talking about measuring conscientiousness means part of the Big 5 model usually. Did you have in mind a different system for assigning people conscientiousness percentiles?
Do you often say COVID-19 really does seem like the lowest x percent of the population by SpO2?
Do you often leave comments like "No. PCR-covid and pulse-oximiter-covid are different diseases. One of them involves having virus genomes in your body and the other one involves having low blood oxygen?"