[Effect of nutrition quality of breakfast on satiety among young white-collar workers].

Objective: To analyze the effect of breakfast nutrition quality on the satiety among young white-collar workers. Methods: A total of 278 subjects were recruited from two cities, Shenyang and Chongqing, in June 2015. The inclusion criteria: white-collar workers aged 25-45 years involved mainly in office work, who did not experience major changes, and individuals who should follow the study protocol and sign the informed consent form. The study employed a three-phase crossover design trial. Each participant received nutritional-adequate breakfast, nutritional-inadequate breakfast, and no breakfast treatment on the basis of assignment to one of three sequences. The breakfast time was once a week and then changed, all participants underwent the tests for three successive weeks. At last, we compared the effect of participants to consume different nutritional quality on satiety sense and hunger sense. Results: A total of 232 participants completed three successive breakfast intervention studies, the age of participants was (35.2 ± 7.9) years, comprised of 48.7% male (n=113). The numbers of participants of aged 25-35 year-old and aged 36-45 were 118 and 114, respectively. Satiety scores of nutrition-adequate breakfast group, nutrition-inadequate breakfast group and no breakfast group were 63.5±14.7, 53.1±10.2 and 36.4±7.2, respectively (P<0.05). In nutrition-inadequate breakfast group and no breakfast group, male subjects scored significantly higher than female subjects (50.9±10.5 vs 46.6±9.4, 35.2±8.3 vs 31.8±5.4) (P<0.05). And, participants aged 25-35 year-old. got satiety score significantly higher than aged 36-45 (51.3±11.0 vs 45.6±12.1, 34.1±6.8 vs 32.5±7.9), the difference was statistically significant (P<0.05). The scores of hunger in the group of nutrition-adequate breakfast, nutrition-inadequate breakfast and no breakfast were 26.3 ± 8.0, 35.1 ± 11.2 and 57.3 ± 17.0, respectively (P<0.05). Conclusion: The nutrition quality of breakfast affects the satiety of young white-collar workers. The better the nutrition quality of breakfast is, the higher the satiety score and the lower the hunger score become. Compared with women and participants aged 36-45 year-old, men and those aged 25-35 year-old get satiety sense more easily.

Dynamic properties of Taiwanese fertility, 1950-1972.

PIP: This extensive statistical study focuses on fertility patterns during the postwar period in Taiwan. The analytical technique is economic, with socioeconomic variables generally considered the important determinants of fertility; on the other hand, female education and labor force participation were seen to exert a strong negative effect on fertility. Taiwan has reduced birth rates nearly 50% in the period from the 1950s-1970s. In 1972, Taiwan's birth rate/woman was 3.4, a 50% reduction from 1950, generally attributed to institution of a well-conceived family planning program in 1964. It is hypothesized that the socioeconomic forces (presented in 7 comprehensive tables) which influenced negatively the rate of births, worked primarily to reduce excess rather than desired fertility. The clear connection between women's participation in the labor force and reduction in desired fertility leads to the suggestion that stronger economic incentives must be presented to women. Given the already wide availability and low cost of birth control devices, further fertility reductions caused by expanded participation in the family planning program are not likely to reduce desired family size significantly. Instead, it is argued that such reductions tend to occur slowly and to be associated with more economically meaningful roles for women. Analyzed on a cost-benefit basis, the fertility control efforts of the Taiwanese government should be directed to achieving a synchronization between the skill levels demanded by the economy and those acquired in the system of higher education. Economic incentives for fewer births would then augment, rather than offset, the presently extant negative effects of slowly changing attitudinal variables and economic development. The formulation and usefulness of statistical methods are developed extensively within this article.^ieng