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Biomedical subjects

M Tew

Publications and source records attributed to M Tew.

34 records · Page 2Linked to original sources
PubMed1985

Place of birth and perinatal mortality.

Analyses of the published results of national surveys and specific studies, as well as of the official stillbirth statistics, consistently point to the conclusion that perinatal mortality is significantly higher in consultant obstetric hospitals than in general practitioner maternity units or at home, even after allowance has been made for the greater proportion of births in hospital at high pre-delivery risk. Unpubliched results of the British births 1970 survey, which have now become available, make possible a direct and authoritative analysis of data on the safest place of birth. Not only does this make the earlier conclusion more certain, but it confounds the doctrine that obstetric intranatal care is particularly beneficial for high pre-delivery risk births. There is no evidence from recent years that the findings of 1970 are not equally valid in the 1980s.

Family Practice↗
PubMed1982

Estimating the survival time of knee replacement.

A method of analysing the results of knee replacement operations, which makes it possible to estimate the annual failure rate and the proportion of implants which will survive successfully for 10 years, is applied to the post-operative data for 365 operations, using Freeman, Sheehan and Manchester prostheses, carried out from 1972 to 1980 at Harlow Wood Orthopaedic Hospital. Two criteria of success are defined. On both, and for all prostheses, the annual failure rate is found to be much lower in the first two than in the later years. Thus, account must be taken of the period since operation if the success of different prostheses is to be validly compared. This is not possible using conventional statistical methods. But significant trends in annual failure rates and significant differences between prostheses can only be identified from samples larger than are usually available in individual series. Hence it will be necessary for many centres to co-operate in pooling results if reliable conclusions are to be reached and valid comparisons made.

Equipment Failure↗
PubMed1980

Perinatal mortality: is home a safer place?

An immediate reduction in perinatal mortality could be achieved by reversing the policy which seeks to ensure that all births take place in consultant obstetric units. This is the logical consequence of the argument presented by Marjorie Tew, research associate in the department of surgery, Nottingham University Medical School, which is based on a statistical study of the various risk factors sometimes assumed to account for the higher crude perinatal mortality rates found in these units.

Delivery, Obstetric↗
PubMed1980

Articular changes associated with a flexion deformity in rheumatoid and osteoarthritic knees.

In a consecutive series of 87 operations for knee replacement prospective observations were made of the pattern of articular destruction in the form of a triangle of erosion or osteophyte formation, which is seen on the medial femoral condyle, sometimes with an associated strip on the lateral femoral condyle. These areas represent the surfaces which are normally in contact with the anterior horns of the menisci when the knee is fully extended. The lesions in question were found only in association with a flexion contracture in 84 out of the 87 cases.

Arthritis, Rheumatoid↗
PubMed1979

The safest place of birth: further evidence.

The distribution of births for each place of delivery was studied with a composite antenatal prediction score, incorporating the most important risk factors, which was developed for the second volume of British Births 1970. Although consultant hospitals are seen to have the greatest share of births at moderate and high risk, this is not sufficient to account for the whole amount by which perinatal mortality in these hospitals exceeds that in other places of delivery.

Delivery, Obstetric↗
PubMed1977

Obstetric hospitals and general-practitioner maternity units--the statistical record.

The share of general-practitioner units in the provision of maternity services, though minor, has increased since 1956, but their facilities have consistently been used less intensively than those of consultant obstetric hospitals. Their fetal and neonatal mortality rates, however, have consistently been much lower than in obstetric hospitals, a disparity which the higher proportion of births in hospital, recorded as being at above average risk, is not nearly enough to explain. These facts should be important considerations in any review of maternity services occasioned by changes in the birthrate.

Family Practice↗