background: epidemiologic aspects of oral and pharyngeal cancers in iran have not been studied adequately. we evaluated age-adjusted incidence rates by sex using pathological confirmed cases between 1991 and 2002 in kerman province, south east­ern iran. methods: the information of cases was collected actively from all of the 18 histopathology departments around the prov­ince. the standardize ri...

have you ever wondered about the important matter of ‘purpose of life’? why do people try so hard to improve their lives? what is the purpose of all these efforts and activities? why should all these planning for the future exist? what is the necessity of controlling our true and false current feelings (like leisure, joy, eating and drinking of any enjoyable, drug and alcohol abuse) constantly?...

OBJECTIVE To investigate whether family type and psychosocial risks indexed by family type were systematically associated with differences in health outcomes in children. DESIGN AND SUBJECTS The study is based on a longitudinal, prospective study of a large (n = approximately 10 000) community sample of families, the Avon Longitudinal Study of Pregnancy and Childhood. MAIN OUTCOME MEASURES ...

The opinions expressed herein are those of the authors and do not necessarily reflect the views of USAID. Context. Alternative-development (AD) programs are being offered to the population of seven regions of central-eastern Peru involved in coca cropping. The youth of these regions are above the national average in risk of pregnancy and sexually-transmited infections, use of alcohol and drugs,...

OBJECTIVE To investigate behavioral risks and life circumstances of adolescent mothers with older (> or =5 years) adult (> or =20 years old) vs. similar-aged (+/-2 years) male partners at 12 months' postpartum. METHODS Nine hundred thirty-one adolescent females were interviewed after delivery and were mailed surveys to complete at 12 months' postpartum. Analysis by chi(2) and t test was used ...

Using controlled experiments to compare the risk attitude and willingness to compete of husbands and wives in 500 couples in rural Vietnam, we find that women are more risk averse than men and that, compared to men, women are less likely to choose to compete, irrespectively of how likely they are to succeed. Our findings suggest that women are more likely to self-select into economic activities...

Objective: To develop a lifestyle risk scale (LRS) of health-related behaviors based on risk assessments of study participants. Method: By means of pairwise comparisons of assessed risks associated with tobacco, alcohol, obesity, fast-food, physical inactivity, and lack of sleep, each at four levels, 24 behaviors were ranked on a unidimensional risk scale. Results: Overall, use of tobacco was a...

Among the various online shopping business models, one that specifically attracts the attention of Internet users is “online group buying. which is characterized by group negotiation benefits and online word-of-mouth effects. Extant online group buying research has examined topics covering pricing mechanisms, pricing models, sales performance, and online users’ motivation to participation. Wher...