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Document athletics in README, About limitations, data dictionary

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X9jG4CUFcH6n4vFvgtwndY
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emfurst 2026-10-17 11:40:48 -04:00
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docs/data_dictionary.md
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@ -168,6 +168,49 @@ Raw data layer for University of Delaware administrative analytics. All tables a
| total_investment_return | BIGINT | Total investment return (all funds) | F2D10 |
| long_term_investments | BIGINT | Long-term investments (balance sheet) | F2A01 |
### raw_eada_institution
**Source:** EADA institution-level file (`instLevel.xlsx`), U.S. Dept. of Education OPE
**Granularity:** One row per institution per year
**Primary Key:** (unitid, year)
**Note:** `year` is the academic-year end (2025 = 2024-25), matching IPEDS fiscal years. Coverage starts in 2007; earlier files use coded column names. Revenue equals expenses for UD because the institutional subsidy is reported as revenue.
| Column | Type | Description | Source field |
|--------|------|-------------|-------------|
| unitid | INTEGER | IPEDS institution identifier | unitid |
| year | INTEGER | Academic-year end | derived from file list |
| classification | VARCHAR | NCAA division | classification_name |
| total_revenue | BIGINT | Grand total athletics revenue | GRND_TOTAL_REVENUE |
| total_expenses | BIGINT | Grand total athletics expenses | GRND_TOTAL_EXPENSE |
| unallocated_revenue | BIGINT | Revenue not allocated by sport | TOT_REVENUE_ALL_NOTALLOC |
| unallocated_expenses | BIGINT | Expenses not allocated by sport | TOT_EXPENSE_ALL_NOTALLOC |
| student_aid | BIGINT | Athletically related student aid | STUDENTAID_TOTAL |
| recruiting_expenses | BIGINT | Recruiting expenses | RECRUITEXP_TOTAL |
| head_coach_salary_men | BIGINT | Average head coach salary, men's teams | HDCOACH_SALARY_MEN |
| head_coach_salary_women | BIGINT | Average head coach salary, women's teams | HDCOACH_SALARY_WOMEN |
| asst_coach_salary_men | BIGINT | Average assistant coach salary, men's teams | ASCOACH_SALARY_MEN |
| asst_coach_salary_women | BIGINT | Average assistant coach salary, women's teams | ASCOACH_SALARY_WOMEN |
| participants_men | INTEGER | Unduplicated male participants | UNDUP_CT_PARTIC_MEN |
| participants_women | INTEGER | Unduplicated female participants | UNDUP_CT_PARTIC_WOMEN |
| ft_undergrad_enrollment | INTEGER | Full-time undergraduate enrollment | EFTotalCount |
### raw_eada_sport
**Source:** EADA per-sport file (`Schools.xlsx`)
**Granularity:** One row per institution per sport per year
**Primary Key:** (unitid, year, sport)
**Note:** Sport names are stored as reported and vary across years (e.g. "Swimming and Diving" vs "Swimming and Diving (combined)"). Men's and women's teams of the same sport share one row.
| Column | Type | Description | Source field |
|--------|------|-------------|-------------|
| unitid | INTEGER | IPEDS institution identifier | unitid |
| year | INTEGER | Academic-year end | derived from file list |
| sport | VARCHAR | Sport name | Sports |
| participants_men | INTEGER | Male participants (incl. coed teams) | SUM_PARTIC_MEN |
| participants_women | INTEGER | Female participants (incl. coed teams) | SUM_PARTIC_WOMEN |
| total_revenue | BIGINT | Revenue for the sport | TOTAL_REVENUE_ALL |
| total_expenses | BIGINT | Expenses for the sport | TOTAL_EXPENSE_ALL |
### raw_admin_headcount
**Source:** Web scraping of UD staff directory pages
@ -190,6 +233,7 @@ Raw data layer for University of Delaware administrative analytics. All tables a
- **IPEDS tables** are linked by `unitid` (UD = 130943)
- **IRS 990 tables** are linked by `object_id` (filing) and `ein` (organization)
- **IPEDS → IRS 990:** The `ein` field in `raw_institution` links to `ein` in 990 tables. UD Foundation EINs: 516000297, 516017306
- **EADA tables** link to IPEDS by `unitid`; `year` uses the same fiscal-year convention
- **CPI-U** is used for inflation adjustment — join on `year` (and optionally `month`) to any table with a year column
- **Endowment** data comes from IPEDS F2 endowment section; 990 `total_assets` provides a cross-check
- **Admin headcount** links to IPEDS via institutional context (UD only in first iteration)