feat: integrate Snowflake-direct indication lookup into CLI refresh (Task 1.2, 2.3)
Replace batch_lookup_indication_groups() with get_patient_indication_groups() for indication chart processing. The new approach: - Extracts unique PseudoNHSNoLinked values from HCD data - Queries Snowflake directly using the cluster CTE - Builds indication_df mapping UPID → Search_Term (matched) or Directory (fallback) - Logs coverage statistics (diagnosis % vs fallback %) This completes the integration of the new Snowflake-direct GP lookup approach.
This commit is contained in:
Andrew Charlwood
+75
-9
@@ -48,7 +48,7 @@ from data_processing.pathway_pipeline import (
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extract_indication_fields,
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convert_to_records,
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)
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from data_processing.diagnosis_lookup import batch_lookup_indication_groups
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from data_processing.diagnosis_lookup import get_patient_indication_groups
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logger = get_logger(__name__)
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@@ -360,10 +360,10 @@ def refresh_pathways(
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elif current_chart_type == "indication":
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# For indication charts, we need to look up GP diagnoses for all patients
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# This creates indication_df mapping UPID -> Indication_Group
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logger.info("Building indication groups from GP diagnosis lookups...")
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# using the new Snowflake-direct approach via get_patient_indication_groups()
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logger.info("Building indication groups from GP diagnosis lookups (Snowflake-direct)...")
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# Get Snowflake connector for GP lookups
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# Check Snowflake availability
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from data_processing.snowflake_connector import get_connector, is_snowflake_available
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if not is_snowflake_available():
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@@ -373,28 +373,94 @@ def refresh_pathways(
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continue
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try:
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import pandas as pd
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connector = get_connector()
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# Batch lookup indication groups for all patients
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indication_df = batch_lookup_indication_groups(
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df=df,
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# Step 1: Extract unique PseudoNHSNoLinked values from df
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# This is the patient identifier that matches PatientPseudonym in GP records
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if 'PseudoNHSNoLinked' not in df.columns:
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logger.error("DataFrame missing 'PseudoNHSNoLinked' column - cannot lookup GP records")
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for config in DATE_FILTER_CONFIGS:
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results[f"{config.id}:indication"] = []
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continue
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# Get unique patient pseudonyms and their corresponding UPID/Directory
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patient_lookup = df[['UPID', 'PseudoNHSNoLinked', 'Directory']].drop_duplicates(
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subset=['PseudoNHSNoLinked']
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).copy()
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patient_pseudonyms = patient_lookup['PseudoNHSNoLinked'].dropna().unique().tolist()
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logger.info(f"Looking up GP diagnoses for {len(patient_pseudonyms)} unique patients...")
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# Step 2: Call the new Snowflake-direct indication lookup
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gp_matches_df = get_patient_indication_groups(
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patient_pseudonyms=patient_pseudonyms,
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connector=connector,
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batch_size=500,
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)
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# Step 3: Build indication_df mapping UPID -> Indication_Group
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# For matched patients: Indication_Group = Search_Term
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# For unmatched patients: Indication_Group = Directory + " (no GP dx)"
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if gp_matches_df.empty:
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logger.warning("No GP matches found - all patients will use fallback directory")
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# All patients use fallback
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indication_records = []
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for _, row in patient_lookup.iterrows():
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indication_records.append({
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'UPID': row['UPID'],
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'Indication_Group': str(row['Directory']) + " (no GP dx)",
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'Source': 'FALLBACK',
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})
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indication_df = pd.DataFrame(indication_records)
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else:
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# Create lookup dict: PseudoNHSNoLinked -> Search_Term
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match_lookup = dict(zip(
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gp_matches_df['PatientPseudonym'],
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gp_matches_df['Search_Term']
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))
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# Build indication records for each unique patient
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indication_records = []
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for _, row in patient_lookup.iterrows():
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pseudo = row['PseudoNHSNoLinked']
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upid = row['UPID']
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directory = row['Directory']
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if pseudo in match_lookup:
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indication_records.append({
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'UPID': upid,
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'Indication_Group': match_lookup[pseudo],
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'Source': 'DIAGNOSIS',
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})
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else:
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indication_records.append({
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'UPID': upid,
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'Indication_Group': str(directory) + " (no GP dx)",
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'Source': 'FALLBACK',
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})
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indication_df = pd.DataFrame(indication_records)
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# Log coverage statistics
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if not indication_df.empty:
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diagnosis_count = (indication_df['Source'] == 'DIAGNOSIS').sum()
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fallback_count = (indication_df['Source'] == 'FALLBACK').sum()
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total = len(indication_df)
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stats["diagnosis_coverage"] = {
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"diagnosis": diagnosis_count,
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"fallback": fallback_count,
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"diagnosis": int(diagnosis_count),
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"fallback": int(fallback_count),
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"total": total,
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"diagnosis_pct": round(100 * diagnosis_count / total, 1) if total > 0 else 0,
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}
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logger.info(f"Indication coverage: {diagnosis_count}/{total} ({stats['diagnosis_coverage']['diagnosis_pct']}%) diagnosis-matched")
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# Log top indication groups
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top_indications = indication_df[indication_df['Source'] == 'DIAGNOSIS']['Indication_Group'].value_counts().head(5)
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if len(top_indications) > 0:
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logger.info(f"Top 5 indications: {dict(top_indications)}")
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# Rename column for compatibility with generate_icicle_chart_indication
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# It expects indication_df to have 'Directory' column (mapped from Indication_Group)
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indication_df_for_chart = indication_df[['UPID', 'Indication_Group']].copy()
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