As an occupational health epidemiologist, you are required to measure the effect

Question

As an occupational health epidemiologist, you are required to measure the effect of stress on workers in your manufacturing plant. two different tests previously developed to measure stress in industrial workers are selected: stress test alpha and stress test delta. the sensitivity and specificity of each test are shown here. stress test alpha: sensitivity = 60%, specificity = 95%. stress test delta: sensitivity = 55%, specificity = 90%. Which test would you prefer: Stress Test Alpha or Stress Test Delta? As an occupational health epidemiologist, you are required to measure the effect of stress on workers in your manufacturing plant. two different tests previously developed to measure stress in industrial workers are selected: stress test alpha and stress test delta. the sensitivity and specificity of each test are shown here. stress test alpha: sensitivity = 60%, specificity = 95%. stress test delta: sensitivity = 55%, specificity = 90%. Which test would you prefer: Stress Test Alpha or Stress Test Delta? Which test would you prefer: Stress Test Alpha or Stress Test Delta?

Explanation / Answer

Stress Test Alpha

The test with higher sensitivity and higher specificity is stress test alpha. Higher sensitivity indicates, the test is more accurate in identifying the effect of stress on workers (tue positives will be more) and higher specificity indicates that the test is more accurate in identifying the absence of stress (true negatives are high). Since both specificity and sensitivity are high for stress test alpha, it is prefered to use this test.

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