Of 252 male lung cancer patients, 248 or 98% were cigarette smokers, significantly (P less than .001) more than in the control group (526 = 64% of 839). In relation to the relative risks (RR) of never-smokers, the adjusted (for age, total years smoked, and average number of cigarettes smoked per day) lung cancer RR for smokers who had exclusively smoked cigarettes belonging to group II (15-24 m...

background: functional appliances such as bionator have been used to treat class ii malocclusion. the purpose of this study was to compare the skeletal, dental and soft tissue effects of bionator appliances with multi-p (a newly developed appliance) in the treatment of class ii malocclusion. subjects and methods: 45 class ii children were chosen and randomly assigned to either the bionator or m...

a comparable population (group ii). The following significant differences between the two groups are established: patients in group I were younger (27.5 years vs 33.7 years, P < 0.005); at least one risk factor was present in all patients in group II, but in only 40% of group I (P < 0.0001). effort angina preceded the attack in ten patients of group II, but in none of group I (P < 0.0001). The ...

BACKGROUND The study was carried out to examine the effect of selective α1 adrenoceptor agonist midodrine hydrochloride vs. β-adrenergic blockade metoprolol in the treatment of children with postural orthostatic tachycardia syndrome (POTS). METHODS AND RESULTS Fifty-three children with POTS were divided into group I (midodrine hydrochloride plus conventional therapy), group II (metoprolol plu...