Loyalty-Card Purchase Data
Cross-source consensus on Loyalty-Card Purchase Data from 1 sources and 6 claims.
1 sources · 6 claims
Uses
Preparation
Comparisons
Where it comes from
Highlighted claims
- CLOCS-2 requests up to six years of backdated loyalty-card purchase data when available. — Cancer loyalty card study-2 (CLOCS-2): protocol for an observational case-control study focusing on the patient interval in cancer diagnosis
- For cases, purchase data are backdated from cancer diagnosis; for controls, they are backdated from study consent. — Cancer loyalty card study-2 (CLOCS-2): protocol for an observational case-control study focusing on the patient interval in cancer diagnosis
- Purchase data include purchase-level records, dates, store location by postcode, and retailer-supplied product categories. — Cancer loyalty card study-2 (CLOCS-2): protocol for an observational case-control study focusing on the patient interval in cancer diagnosis
- Prescription pharmacy data are excluded because prescriptions are not part of loyalty-card purchase histories. — Cancer loyalty card study-2 (CLOCS-2): protocol for an observational case-control study focusing on the patient interval in cancer diagnosis
- The study captures over-the-counter medicine purchases and food purchases as possible indicators of symptom management or dietary change. — Cancer loyalty card study-2 (CLOCS-2): protocol for an observational case-control study focusing on the patient interval in cancer diagnosis
- Tesco data access uses OpenID Connect authentication to reduce manual identity verification and participant burden. — Cancer loyalty card study-2 (CLOCS-2): protocol for an observational case-control study focusing on the patient interval in cancer diagnosis