Measuring gender norms about relationships in early adolescence : results from the global early adolescent study

Introduction: Gender norms are increasingly recognized as drivers of health and wellbeing. While early adolescence constitutes a critical window of development, there is limited understanding about how adolescents perceive gender relations across different cultural settings. This study used a mixed-method approach, grounded in the voices of young people around the world, to construct and test a cross-cultural scale assessing the perceptions of gender norms regulating romantic relationships between boys and girls in early adolescence. Methods: The study draws on the Global Early Adolescent study (GEAS), a study focusing on gender norms and health related outcomes over the course of adolescence in urban poor settings worldwide. In-depth interviews were first conducted among approximately 200 adolescents between 10-14 years in seven sites across 4 continents to identify common scripts guiding romantic relations in early adolescence. These scripts were then transformed into a multidimensional scale. The scale was tested among 120 adolescents in each of 14 GEAS sites, followed by a second pilot among 75 adolescents in six sites. We evaluated the psychometric criteria of each subscale using principal component analysis, and parallel analysis, followed by exploratory factor analysis to guide the selection of a more parsimonious set of items. Results: Results suggested a two-factor structure, consisting of an "adolescent romantic expectations" subscale and a "Sexual Double Standard" subscale. Both subscales yielded high internal validity in each site, with polychoric Cronbach alpha values above 0.70 with the exception of Kinshasa for the adolescent romantic expectations scale (0.64) and Hanoi for the sexual double standard scale (0.61). Conclusion: This study reveals common perceptions of gendered norms about romantic engagement in early adolescence, normative for both sexes, but socially valued for boys while devaluated for girls. The findings illustrate that social hierarchies of power in romantic relationships form early in adolescence, regardless of cultural setting

Vietnamese aging and marital sexual behavior in comparative perspective

This study examines marital sexual activity in relation to age and its significance for marital relationships in Vietnam with particular attention to older persons. Results are compared with Thailand and the US. Two regional surveys provide the first quantitative assessment of marital sex in Vietnam. As elsewhere, marital sexual activity declines with age. At older ages, substantial proportions of married Vietnamese are sexually inactive. Levels of activity among older Vietnamese and Thais are remarkably similar and substantially lower than in the US. Contrary to US studies, the frequency of sexual activity shows little relationship to marital satisfaction and harmony in Vietnam. Possible explanations for these differences are discussed in terms of biases in the data, differences in health and living arrangements, and societal, cultural and normative contexts. We speculate that a main reason underlying the differences is a lesser societal emphasis on sex in general and on the importance of sexual and physical intimacy in marital relationships in Vietnam and Thailand than in the US

Continuity and change in premarital sex in Vietnam

Context: Premarital sexual activity is thought to be rising in Vietnam. However, there is little evidence documenting such an increase, and it is unknown whether levels of premarital sex differ between northern and southern Vietnam and whether premarital sex occurs primarily with a future spouse. Methods: Surveys conducted in northern Vietnam (Red River Delta) and southern Vietnam (Ho Chi Minh City and surrounding environs) in 2003-2004 among individuals married during one of three important periods in Vietnamese history (1963-1971, 1977-1985 or 1992-2000) were used to assess trends and regional differences in the prevalence and context of premarital sex. Results: In both regional samples, 31% of men who married in 1992-2000 reported having had premarital sex. The proportion was much lower among women (8% in the South, 12% in the North). The prevalence of premarital sex rose markedly across cohorts in the North but only modestly in the South. Relatively few men had premarital sex with someone other than a future spouse (3-23%). The proportion of the rise in the prevalence of premarital sex that was due to sex exclusively with a future spouse was greater in the North (42%) than in the South (25%). Conclusions: These results suggest that premarital sex is becoming more common in Vietnam but is still not widespread. Better information about the sexual networks of men in the general population and their contacts with high-risk groups (e.g., commercial sex workers) is needed to ascertain the likelihood that HIV/AIDS will spread to the general population

Anticancer effects of saponin and saponin–phospholipid complex of Panax notoginseng grown in Vietnam

Objective: To evaluate the antitumor activity both in vitro and in vivo of saponin–phospholipid complex of Panax notoginseng. Methods: The in vitro cytotoxic effect of saponins extract and saponin–phospholipid complex against human lung cancer NCI-H460 and breast cancer cell lines BT474 was examined using MTS assay. For in vivo evaluation of antitumor potential, saponin and saponin–phospholipid complex were administered orally in rats induced mammary carcinogenesis by 7,12-dimethylbenz(a)anthracene, for 30 days. Results: Our data showed that saponin–phospholipid complex had stronger anticancer effect compared to saponin extract. The IC50 values of saponin–phospholipid complex and saponin extract for NCI-H460 cell lines were 28.47 μg/mL and 47.97 μg/mL, respectively and these values for BT474 cells were 53.18 μg/mL and 86.24 μg/mL, respectively. In vivo experiments, administration of saponin, saponin–phospholipid complex and paclitaxel (positive control) effectively suppressed 7,12-dimethylbenz(a) anthracene-induced breast cancer evidenced by a decrease in tumor volume, the reduction of lipid peroxidation level and increase in the body weight, and elevated the enzymatic antioxidant activities of superoxide dismutase, catalase, glutathione peroxidase in rat breast tissue. Conclusions: Our study suggests that saponin extract from Panax notoginseng and saponin–phospholipid complex have potential to prevent cancer, especially breast cancer

Morbidity and Mortality Patterns in Children Admitted to Hospital in Thai Binh, Vietnam: A Five-year Descriptive Study with a Focus on Infectious Diseases

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