Spend Categories (per unit)

• Routine Maintenance — routine_maintenance / units
• Planned Maintenance — planned_maintenance / units
• Major Repairs — major_repairs_expenditure / units
• Capitalised Repairs — capitalised_major_repairs / units
• Management Cost — management / units

Outcome Metrics

• TP01 — Overall Satisfaction
• TP02 — Repairs Satisfaction
• TP04 — Home Maintained Satisfaction

Correlation Matrix

For each spend–outcome pair, the Pearson correlation coefficient is calculated across all organisations with valid data (minimum 5 required). Values range from −1 to +1:

• Positive (green) — higher spend associated with better outcomes
• Negative (red) — higher spend associated with worse outcomes
• Near zero — no linear relationship

Impact Ranking

Spend categories ranked by their correlation with TP01 specifically. Shows which investment types have the strongest link to overall satisfaction.

Efficiency Classification

• Efficient — TP01 above sector average AND total spend per unit below average
• Inefficient — TP01 below sector average AND total spend per unit above average
• Average — all other organisations