Abstract 9720: Trends In The Prevalence Of Coronary Heart Disease And Congestive Heart Failure Among Adult Population In The U.s.: National Health And Nutrition Examination Survey 2001-2008
Bibliographic record
Abstract
Objectives: To evaluate overall trends in the prevalence of coronary heart disease (CHD) and congestive heart failure (CHF) in the U.S. population aged 40 years and older. Methods: A total of 13866 individuals aged 40 and older participated in the household interview and of these 13,067 were both interviewed and examined in National Health and Nutrition Examination Survey (2001-2008). Demographic variables (age, gender, race/ethnicity, education and health insurance) and risk factors (hypertension, diabetes, high cholesterol and body mass index) were included. Definition of coronary heart disease, congestive heart failure and undiagnosed angina as follows: Results: The prevalence of coronary heart disease significantly decreased from 10.3% in 2001-2002 to 8.7% in 2007-2008 ( P-trend < 0.05) but no changes were observed in CHF. CHD prevalence among women ( P-trend = 0.05) and adults with health insurance ( P-trend < 0.05) significantly decreased. In adults who had a total cholesterol < 240 mg/dl, CHD prevalence significantly decreased in those without hypertension and in adults who did not have diabetes ( p-trend < 0.05 for all groups). The prevalence of angina significantly decreased from 4.8% in 2001-2002 to 3.2% in 2007-2008 ( P-trend < 0.05). Meanwhile, the overall prevalence of MI remained unchanged. Conclusion: The overall prevalence of CHD significantly decreased in the 8 years survey period. The results suggest that the overall decreased prevalence in CHD may have been primarily driven by the decreased prevalence in angina because the prevalence of the other components of CHD did not change over this 8 year interval.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".