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Biomedical subjects

A Auliciems

Publications and source records attributed to A Auliciems.

17 recordsLinked to original sources
PubMed1997

The time factor in mortality: weather associations in a subtropical environment.

Mortality rates for a decade in Brisbane are analysed for dependence upon atmospheric factors. Time filters are applied to both the dependent and independent variables, and several models are developed to enable prediction, especially for weekly intervals. Statistically, deaths are observed to increase with colder and less humid weather with winds from a westerly, direction. Overall, taking account of both synoptic and seasonal influences, > 90% of cumulative deviations from mean death rates are explained. Some differences are also noted in the association of death with the weather between sexes, age groups and causes of death.

Adolescent↗
PubMed1993

Myocardial infarct death, the population at risk, and temperature habituation.

Daily myocardial infarct deaths from Brisbane, 29 degrees 28' S, and Montreal, 45 degrees 30' N, were used to derive a "pool of susceptible individuals". Pool size had no effect on the minimum death temperature but large pools increased the value of the acceleration temperature in Brisbane and the maximum death temperature in Montreal. Moderately sized pools in Montreal appeared to produce reduced death rates in cold conditions from both cold avoidance and habituation. A generalized relationship between temperature and myocardial infarct death is postulated.

Acclimatization↗
PubMed1992

Myocardial infarct death and temperature in Auckland, New Zealand.

Daily myocardial infarct deaths for Auckland (36 degrees 51'S, 20 m above sea-level) show an increase in mortality rate with decreasing temperatures over the entire thermal range. Parallel studies in Brisbane and Montreal predicted a minimum death temperature between 21 and 24 degrees C, but no such point was apparent. Lack of temperatures above 21 degrees C, together with the small overall thermal range, is thought responsible.

Aged↗
PubMed1989

Cardiovascular deaths and temperature in subtropical Brisbane.

Analysis of 2-year myocardial infarct deaths in subtropical Brisbane shows an increase in mortality rate within a temperature range normally considered mild in mid-latitude locations. During both the coldest and warmest season, the relationship is a strong one, especially with temperatures that are below neutrality for the population.

Aged↗
PubMed1989

Temperature and cardiovascular deaths in Montreal.

The incidence of mortality from myocardial infarction over a 2-year period in Montreal is examined in relation to temperatures and snowfall. Mortality is seen to increase with deviations from seasonally determined thermally neutral conditions, although compared to observations of a parallel study in subtropical Brisbane, death rates are lower with similar falls in temperature. In Montreal, mortality is also seen to increase with snow during the previous day. During anomalous cold spells death frequencies decrease, a phenomenon interpreted as the behavioural thermoregulatory process of cold avoidance.

Cold Climate↗
PubMed1987

Sudden infant deaths and clear weather in a subtropical environment.

Particulate pollution levels were found to decrease, on average, over the 10-day period preceding SIDS incidence in a study of 369 cases over 15 years in Brisbane, Australia. This unexpected association could not be explained by correlations between daily pollution levels and daily precipitation, wind velocity, air temperature or cloud. Of the meterological variables studied, which might have given rise to the particulate-SIDS associations, only visibility showed associations with SIDS incidence. Average visibility increased prior to SIDS in both summer and winter cases. It is hypothesised that these findings may be due to either direct effects of light, or due to increased outdoor exposure of infants and/or to changes in parental behaviour during clear weather.

Australia↗
PubMed1975

Warmth and comfort in the subtropical winter: a study in Brisbane schools.

Winter thermal sensations of secondary and primary school-children in Queensland are related to air temperature. Neutrality is estimated by regression analysis of over 6000 assessments and a lower comfort limit is suggested to include 80% of the children. Cold discomfort is seen as the main problem, and comparison is made to an earlier study in England.

Adolescent↗
PubMed1973

Thermal sensations of secondary school children in summer.

Summer thermal sensations of secondary schoolchildren in England are compared with those earlier published for winter. Heat stress, contrary to expectation, is seen to decrease during the warm months, and neutrality is found to increase by some 6 degrees F. (3.5 degrees C.) air temperature, which is more than double the increases observed for adults under similar circumstances.

Adolescent↗