fixes invest/treat order column in aae hes data

[tomjemmett]

the invest/treat order columns should be a numeric value, 1, 2, 3... etc. but, we were using the column name, so these were coming through as treat_01, treat_02, treat_03, etc.

this fixes that by replacing the strings with the correct integer value

[tomjemmett]

for information: I have already fixed the data in UDAL using this code.

[Copilot]

Copilot review overview

🟡 Changes recommended

The order literal remains quoted ('{i + 1}'), producing a string column instead of the numeric value stated in the PR description and used unquoted in the sibling diagnoses.py helper.

Review effort: Balanced
Findings: 2

Open (2)

• investigation_order is still generated as a string · New
• treatment_order is still generated as a string · New

What changed in this PR

This PR fixes the treatment_order / investigation_order columns produced by the HES A&E melt (stack) helpers. Previously the order value was set to the source column name (e.g. treat_01, invest_02), so the ordinal position was lost; the change derives the order from the enumeration index instead. This feeds downstream primary-treatment selection in raw_data/aae.py, which filters on *_order == 1.

Changes:

• Replace the column-name order key with the 1-based enumeration index in the stack expression for A&E treatments.
• Apply the same fix for A&E investigations.

File	Description
src/​nhp/​data/​hes/​aae/​treatments.py	Uses i + 1 instead of the column name as the treatment_order value in the stack melt string.
src/​nhp/​data/​hes/​aae/​investigations.py	Uses i + 1 instead of the column name as the investigation_order value in the stack melt string.

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[yiwen-h]

Makes sense to me; do we know what the expected difference will be to TPMA data, if any?

[tomjemmett]

None, this was an artifact of moving the hes steps into nhp_data.