Using the Platform

The WHO Mental Health Platform is a web-based tool for running cost-effectiveness analyses of mental health interventions. The platform runs entirely in your browser using WebAssembly (WASM) technology, requiring only a single data fetch at the start of each analysis.

Overview

The platform allows you to:

Select from five mental health models (anxiety, bipolar, depression, epilepsy, psychosis)
Choose intervention scenarios to compare against a baseline
Configure country-specific settings and time horizons
Edit assumptions about epidemiology, costs, and intervention effects
Run analyses locally in your browser
View comprehensive results including health impacts, costs, and resources

Getting Started

1. Select a Model

From the home page, choose one of the available mental health models. Each model represents a different condition with specific epidemiology, health states, and intervention options.

2. Configure Your Analysis

Country Selection: Choose the country for your analysis. This determines demographic data, epidemiological parameters, and default cost values.

Time Horizon: Set the start year and number of years to simulate. Typical analyses run for 10-20 years.

Scenario Selection:

Baseline: The current state without new interventions (usually "Business as Usual")
Comparison: The intervention scenario you want to evaluate

3. Review and Edit Assumptions

The Assumptions page displays all input data that will be used in your analysis, organized into categories:

Demography: Population counts by age and sex, fertility rates, mortality rates

Epidemiology: Disease prevalence, incidence, remission, and relapse rates by age and sex

Intervention Parameters: Coverage levels, effect sizes, costs per unit

Cost Parameters: Medicines, diagnostics, workforce salaries, facility visit costs

You can edit any value in the assumptions tables. Changes apply to both baseline and comparison scenarios unless you specify different parameters in your scenario definitions.

4. Run the Analysis

Click "Run Analysis" to execute both baseline and comparison scenarios locally in your browser. The platform:

Applies scenario parameters to the model using JSONPath expressions
Fetches required data from the unified data API (cached for subsequent runs)
Executes the model using botech-rust compiled to WebAssembly
Processes results and computes analytics

Typical runs complete in 5-30 seconds depending on model complexity.

5. View Results

The Results page provides comprehensive visualizations:

Health Impact Charts:

Cases averted by intervention
DALYs (Disability-Adjusted Life Years) averted
Deaths averted
Prevalence over time

Cost Charts:

Total costs by intervention component

Resource Charts:

Healthcare workforce requirements
Facility visit volumes
Medicine and diagnostic utilization

Upcoming:

Cost per person reached
Cost per capita (per million population)
Cost-effectiveness ratios
Incremental cost per DALY averted