Cohort Configuration
Live SimulationResearch isolates first-born individuals to evaluate elevated risk parameters against subsequent siblings.
28 yrs
18 y/o
28 y/o (Baseline)
45 y/o
3 Siblings
1 (Only child/Pair)
3
6+ Siblings
Key Epidemiological Insight
First-borns exhibit statistically elevated relative odds ratios for neurodevelopmental conditions, though baseline population prevalence remains the primary driver of absolute outcome risks.
Max Absolute Risk Increase:
+1.30%
Research Attribution
@stats_feed
"Research found first-borns were more often diagnosed with neurodevelopmental and some mental health conditions, including autism and ADHD, tics and Tourette syndrome, depression and anxiety."
Simulated Population Cohort Grid
1,000 Representative Samples (Scaled from 100,000 baseline individuals)
Unaffected
Baseline Diagnosed
Elevated Birth Order Case
Simulated Cohort
100,000
Expected Baseline Cases
7,200
Adjusted Birth Order Cases
8,500
Net Absolute Increase
+1,300 (+1.3%)
Odds Ratio Forest Plot & Absolute Risk Comparison
Comparing Relative Odds Ratio (OR) vs Absolute Population Prevalence (%)
| Condition | Baseline Prev. (%) | Adjusted Prev. (%) | Odds Ratio (OR) | Absolute Risk Delta |
|---|