🧱 Block-Level Development Estimation – Logic

This tool helps estimate block-level indicator values by disaggregating district-level data using population or area shares.

🔢 Inputs

  • Total District Population
  • Block Population
  • District-level indicator value (e.g., number of PHCs, % coverage)

📈 Disaggregation Logic

Method 1: Population-Based Disaggregation

Block Share = Block Population / District Population
Block Estimate = District Value × Block Share

This assumes uniform distribution and is best for counts (e.g., number of schools, facilities).

Method 2: Area-Based Disaggregation (Optional)

Block Share = Block Area / District Area
Block Estimate = District Value × Block Area Share

🧠 Example

District has 600,000 population and 30 PHCs. A block with 75,000 population:

Block Share = 75,000 / 600,000 = 0.125
Block PHCs = 30 × 0.125 = 3.75 → ~4 PHCs

This provides useful planning estimates where direct block data is missing.