Seattle Overdose Model

Interactive policy simulation • Compounding deaths

Live model
BASELINE DATA
1,259 2019
Overdose deaths (Year 0)
YEAR 4 (2023)
3,459
Observed deaths • ~28.7% CAGR
BASELINE T_d
2.74 years
time to double (V₂/V₁ > 1)

Policy Levers

Discourage Addict Migration / Inflow
Reduce net arrival of active users
65 %
0% (status quo)
100% (strong discouragement)
Criminalize Use & Distribution
Enforcement + deterrence impact
55 %
0% (current approach)
100% (strong enforcement)
Projection horizon
7 years
HOW THE MODEL WORKS
Growth comes from two drivers:
Inflow/migration of new users
Lethality + distribution among existing users

Sliders reduce these components. Stronger policies bend the curve downward.
T_d / half-life computed with symmetric ln(2)/ln(ratio) per the equations.
BASELINE (no change)
13,310
Projected deaths in year 7
WITH POLICY CHANGES
4,872
Projected deaths in year 7
LIVES SAVED
8,438
vs. baseline trajectory
BASELINE T_d
2.74 years
time to double (T_d > 0 when V₂/V₁ > 1)
POLICY CHAR. T_d / HALF-LIFE (annual rate)
Projected Overdose Deaths
Year 0 → selected horizon
Baseline
With policies
Year-by-year projection
Scroll for more years →
Year Baseline With Policies Difference T_d / Half-life
(cumul. from Y0 to row)
This is a simplified exponential model for illustrative purposes. Real-world outcomes depend on many variables including supply, treatment access, and enforcement consistency.