Prevalence of serious eye disease and visual impairment in a north London population: population based, cross sectional study

Objective: To estimate the magnitude of serious eye disorders and of visual impairment in a defined elderly population of a typical metropolitan area in England, and to assess the frequency they were in touch with, or known to, the eye care services.

Depression as a risk factor for ischaemic heart disease in men: population based case-control study

Objective: To determine the relation between depression, anxiety, and use of antidepressants and the onset of ischaemic heart disease.

Hormone replacement therapy and risk of hip fracture: population based case-control study

Objective: To determine the relative risk of hip fracture associated with postmenopausal hormone replacement therapy including the effect of duration and recency of treatment, the addition of progestins, route of administration, and dose.

Poverty, unemployment, and common mental disorders: population based cohort study

Objective: To determine whether poverty and unemployment increase the likelihood of or delay recovery from common mental disorders, and whether these associations could be explained by subjective financial strain.

Population based randomised study of uptake and yield of screening by flexible sigmoidoscopy compared with screening by faecal occult blood testing

Objectives: To compare the feasibility of mass screening by flexible sigmoidoscopy with screening by faecal occult blood testing (Haemoccult) and both tests combined.

Perinatal death associated with planned home birth in Australia: population based study

Objective: To assess the risk of perinatal death in planned home births in Australia.

Which contacts of patients with meningococcal disease carry the pathogenic strain of Neisseria meningitidis? A population based study

Objectives: To determine the prevalence of the pathogenic strain of Neisseria meningitidis in contacts of patients with meningococcal disease, and to determine which contact groups are likely to be carriers and warrant chemoprophylaxis.

Population based cohort study of the association between alcohol intake and cancer of the upper digestive tract

Objective: To examine the relation between different types of alcoholic drinks and upper digestive tract cancers (oropharyngeal and oesophageal).

Population based case-control study of sick leave in postmenopausal women before diagnosis of hyperparathyroidism

Objective: To analyse sick leave in women at risk of primary hyperparathyroidism before its diagnosis.