a recent study indicates that the incidence of smoking cessation varies with age. although nicotine dependence (nd) has been regarded as one of the most significant barriers of successful smoking cessation, few researches have focused on the relationship between nicotine dependence and age.a cross-sectional study (conducted in 2013) with 596 chinese rural male current smokers was performed to s...

this study was undertaken to define the epidemiological aspects of thyroid carcinoma in iran, an area of endemic iodine deficiency nearly until recently. the tehran cancer institute data system registry (tcidsr) was used to identify patients with different histological types of thyroid cancer (tc) in iran. data were analyzed from 438 thyroid cancer cases identified by the tcidsr in 1998-99. dis...

The density difference between fully bleached and fully dark-adapted retinas was assessed for 77 eyes (47 subjects) in the age group 13-50 yr. No significant change in density was found as a function of age. The time constant of pigment regeneration was also found to show no age effects up to the age of 50 yr. These findings are at odds with another study on the density of foveal cones.

The aim of this study was to investigate the effects of shift work on nutrient intakes, including macronutrient intake and micronutrient intake, in a large sample size. The study population included 2,254 male manual workers, 20-59 yr of age, employed in a factory. A self-administered diet history questionnaire was used. The subjects were classified into 3 groups according to their work schedul...

Understanding the human development of pulmonary air spaces is important for calculating the dose from exposure to inhaled materials as a function of age. We have measured, in vivo, the air space caliber of the small airways and alveoli at their natural full distension [total lung capacity (TLC)] by aerosol-derived airway morphometry in 53 children of age 6-22 yr and 59 adults of age 23-80 yr. ...

The objective of this study was to determine whether yearling bulls, when pastured with cows, reduced the duration of postpartum anestrus to the same extent as did mature bulls. This experiment was conducted over a 3-yr period. Cows were stratified by parity group to achieve 37% 2-yr-old and 63% mature (> 2-yr-old) cows within each treatment group (approximately 50 cows per treatment per year)....

The objective of this study was to investigate the effect of administration of recombinant human growth hormone (hGH) in patients with Noonan syndrome. hGH was administered (0.5 IU/kg/week) to 15 patients with Noonan syndrome over a 2 year period. Average patient age prior to therapy was 7.5 +/- 2.5 (mean +/- SD) yr, the height SD score was -2.8 +/- 0.7, and the pretreatment height velocity and...

Bronchoscopy was undertaken in 79 outpatients using local anaesthesia plus an i.v. injection of flunitrazepam 0.01 mg kg-1. The co-operation of the patients and the ease of bronchoscopy were good regardless of the age of the patient. There was an increase in amnesia for the bronchoscopy with increasing age, but the most distinct difference between different age groups was that the amnesic actio...

UNLABELLED Bronchial responsiveness (BR) is an important risk factor for the development and outcome of asthma. This study assessed childhood risk factors for both the severity of BR in adulthood and either improvement or worsening of BR over time. Finally, we studied cross-sectional risk factors of BR in adulthood. Between 1966 and 1969, 119 allergic asthmatic children (5-14 yr of age) were st...