Is omission of free text records a possible source of data loss and bias in Clinical Practice Research Datalink studies? A case–control study

Quantifying the risk of multiple myeloma from symptoms reported in primary care patients: a large case–control study using electronic records

(2015) Elizabeth A Shephard et al.   BRITISH JOURNAL OF GENERAL PRACTICE

Quantifying the risk of non-Hodgkin lymphoma in symptomatic primary care patients aged ≥40 years: a large case–control study using electronic records

(2015) Elizabeth A Shephard et al.   BRITISH JOURNAL OF GENERAL PRACTICE

Quantifying the risk of Hodgkin lymphoma in symptomatic primary care patients aged ≥40 years: a case–control study using electronic records

(2015) Elizabeth A Shephard et al.   BRITISH JOURNAL OF GENERAL PRACTICE

Data Resource Profile: Clinical Practice Research Datalink (CPRD)

(2015) Emily Herrett et al.   INTERNATIONAL JOURNAL OF EPIDEMIOLOGY

Presentation of respiratory symptoms prior to diagnosis in general practice: a case-control study examining free text and morbidity codes

(2015) R. A. Hayward et al.   BMJ Open

Non-visible versus visible haematuria and bladder cancer risk: a study of electronic records in primary care

(2014) Sarah J Price et al.   BRITISH JOURNAL OF GENERAL PRACTICE

Risk of breast cancer in symptomatic women in primary care: a case–control study using electronic records

(2014) Sarah Walker et al.   BRITISH JOURNAL OF GENERAL PRACTICE

Optimising the use of electronic health records to estimate the incidence of rheumatoid arthritis in primary care: what information is hidden in free text?

(2013) Elizabeth Ford et al.   BMC Medical Research Methodology

Clinical features of kidney cancer in primary care: a case-control study using primary care records

(2013) Elizabeth Shephard et al.   BRITISH JOURNAL OF GENERAL PRACTICE

Risk of uterine cancer in symptomatic women in primary care: case–control study using electronic records

(2013) Sarah Walker et al.   BRITISH JOURNAL OF GENERAL PRACTICE

The risk of oesophago-gastric cancer in symptomatic patients in primary care: a large case–control study using electronic records

(2012) S Stapley et al.   BRITISH JOURNAL OF CANCER

The risk of pancreatic cancer in symptomatic patients in primary care: a large case–control study using electronic records

(2012) S Stapley et al.   BRITISH JOURNAL OF CANCER

Clinical features of bladder cancer in primary care

(2012) Elizabeth A Shephard et al.   BRITISH JOURNAL OF GENERAL PRACTICE