Results of Cox Regression: NHS 111 Caller Outcomes in Bradford, 2022-2023

Bradford, England, data from 187,665 NHS 111 telephone calls between January 2022 and June 2023, comparing triaged and non-triaged callers. The dataset contains results from a Cox proportional hazards model analyzing time to Emergency Department attendance, created by Richard Pilbery and published on figshare. It includes adjusted hazard ratios and cohort statistics derived from the Connected Bradford research database.

Use Cases

• Modeling time-to-event for emergency care access based on call triage status.
• Comparing healthcare utilization patterns between patient cohorts based on telephone triage completion.
• Validating hazard ratios for non-avoidable Emergency Department attendance based on the study's Cox regression results.

Strengths

• Contains results from a large-scale study of 187,665 NHS 111 calls.
• Provides specific statistical outputs, including an adjusted hazard ratio of 0.32 (95% CI 0.30–0.34).
• Covers a defined 18-month period from January 2022 to June 2023 for a specific geographic region.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is very small (5.5 KB), suggesting it contains summary results rather than raw observational data.

Provenance

Source

Routine NHS 111 call data and the Connected Bradford research database.

Collection Method

Time-to-event analysis using Kaplan-Meier curves and Cox proportional hazards models on linked healthcare records.

Time Range

January 1, 2022 to June 30, 2023

Freshness

Last updated 2026-04-21 17:36:23; freshness should be verified.

Geography

Bradford region of Yorkshire, England