Latitude gradients and secular trends in Europe and North America have been found in the male-female ratio at birth (M/F: male births divided by total births) which is expected to be 0.515. Annual national data for Czechoslovakia and the post-Czechoslovakian (Czech Republic and Slovakia) countries for male and female live births were obtained from the World Health Organisation and analysed with contingency tables. This study analysed 13,123,538 live births. An overall decreasing trend in M/F was found (p < 00001). No latitude gradient was noted. There was an overall deficit of 15,232 male births based on an M/F of 0.515. M/F is declining in this region, despite well developing economies that have resisted the worldwide slowdown. An interplay of several poorly understood factors is likely., Victor Grech, and Literatura 19
Retrospektivní dotazníkové šetření, jehož cílem bylo prokázat, že kouření matek a kouření v domácnostech sledovaných dětí má signifikantní vliv na zvýšení celkové nemocnosti, respiračních infekcí a zánětů středního ucha u dětí do tří let věku, probíhalo v Brně a na jižním Slovensku. Zahrnovalo 120 matek (60 z ČR a 60 z SR) tříletých dětí za spoluúčasti příslušných registrujících praktických pediatrů. Ve sledovaném souboru jsme zaznamenali nejnižší celkovou nemocnost i počet respiračních onemocnění v nekuřáckých domácnostech. Nejvyšší celková nemocnost i počet onemocnění byl v rodinách matek kuřaček, kdy v domácnosti nikdo jiný nekouřil. Studie je v souladu se zahraničními i českými studiemi, které popisují zvýšení nemocnosti a respiračních onemocnění v souvislosti s expozicí tabákovému kouři u dětí do tří let věku., The retrospective data collection whose aim was to prove the effects of smoking associated with the increase of overall illness rate, respiratory infections and the inflammation of the middle ear in children up to the age of 3 living with smoking mothers and in smoking households was carried out in Brno, Czech Republic (CR) and in Southern Slovakia (SR). The study involved 120 mothers of 3 year old children (60 from the CR and 60 from the SR) and the participating practicing pediatricians. The lowest overall illness rate and the lowest number of respiratory diseases was found in the no-smoking families within the monitored group. The highest overall illness rate and the highest number of diseases was encountered in the families of smoking mothers with nobody else smoking in the family. The study is in accordance with foreign and Czech studies that describe an increase in the illness rate and respiratory diseases related to exposure to tobacco smoke in children up to 3 years of age., Ildikó Nagy, Martin Sebera, and Literatura