Respiratory morbidity and lung function in schoolchildren aged 7 to 11 years in South Wales and the West of England.

Abstract

The present study tests the suggestion that the respiratory morbidity of children resident in South Wales is substantially higher than that among children resident in some were matched for population density (with the assistance of the 1971 Census County Reports), socioeconomic index, and size with five schools in the Vale of Glamorgan (two small schools in the Vale were matched with one in Avon). In total 21 schools were selected. SUBJECTS Almost all the schools had mixed ability classes. In such schools where the normal practice is to allocate pupils alternately by successive birthdays, one class was taken to be representative of one year's intake of children. In schools where "streaming" was practised representative samples were chosen from all the year's intake. In two large schools each with a small designated "special" class of low ability children from all age groups these classes were not considered for inclusion in the final sample. Where possible approximately 100 pupils were chosen from each school. The sizes of the schools ranged from 72 to 469 pupils (7-11 years only). QUESTION NAIRESA questionnaire (copies of which may be obtained from the authors) was given to each parent or guardian of a child eligible for inclusion in the study. These questionnaires were distributed by the form teachers from each school. In addition to demographic and medical information the questionnaire included a number of standard questions derived 842 on 10 May 2018 by guest. Protected by copyright.

Time trends in respiratory symptoms in childhood over a 24 year period.

“…In Britain there has been a marked increase in the rate of general practice consultations' and hospital admissions for childhood asthma, 23 although earlier suggestions that asthma mortality is increasing in childhood4 have not been substantiated. 35 The increase in medical activity may reflect changes in the prevalence or severity of the disease.…”

Respiratory infections and their influence on lung function in children: a multiple regression analysis.

“…A complete description of the study sample, questionnaire, and clinical measurements is to be found in the accompanying paper. 4 All values for the lung function indices forced expiratory volume in 0 75 second (FEVo.75) and forced vital capacity were adjusted for height (to a standard height of 130 cm) as described previously. 4 Adjusted values have analyses does not tally exactly with the number in the tables because regression analysis was only performed with the set of subjects for whom there was information recorded on all the independent variables.…”

“…4 All values for the lung function indices forced expiratory volume in 0 75 second (FEVo.75) and forced vital capacity were adjusted for height (to a standard height of 130 cm) as described previously. 4 Adjusted values have been termed FEVo.751 and FVC I respectively. Multiple regression analysis was performed separately on the three dependent variables FEVo.751,FVC I, and FEVo.75 FVC ratio.…”