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PubMedDate not supplied

Recalled characteristics of menstruation in relation to reproductive history among Caucasian, Japanese and Chinese women living in Hawaii.

Characteristics of menstruation and reproductive history were studied in 2331 Caucasian, 4097 Japanese and 1003 Chinese women living in Hawaii and born between 1900 and 1940. Irregular periods, heavy flow and menses lasting more than five days were reported significantly more often in Caucasians than in the other two groups. Canonical correlation and multiple-regression procedures revealed that parity, recalled age at menarche and year of birth were significantly associated to the menstrual descriptions reported, in complex ways, distinctive in each ethnic group. Some similarities in the relationship of reproductive history variables with particular menstruation characteristics were found in the Caucasian and Japanese groups. For example, increased parity was associated with increased menstrual bleeding in both Caucasians and Japanese, and later age at menarche was significantly correlated with irregular menses in these two groups.

Age Factors↗
PubMed2003

Molecular systematics and adaptive radiation of Hawaii's endemic Damselfly genus Megalagrion (Odonata: Coenagrionidae).

Damselflies of the endemic Hawaiian genus Megalagrion have radiated into a wide variety of habitats and are an excellent model group for the study of adaptive radiation. Past phylogenetic analysis based on morphological characters has been problematic. Here, we examine relationships among 56 individuals from 20 of the 23 described species using maximum likelihood (ML) and Bayesian phylogenetic analysis of mitochondrial (1287 bp) and nuclear (1039 bp) DNA sequence data. Models of evolution were chosen using the Akaike information criterion. Problems with distant outgroups were accommodated by constraining the best ML ingroup topology but allowing the outgroups to attach to any ingroup branch in a bootstrap analysis. No strong contradictions were obtained between either data partition and the combined data set. Areas of disagreement are mainly confined to clades that are strongly supported by the mitochondrial DNA and weakly supported by the elongation factor 1alpha data because of lack of changes. However, the combined analysis resulted in a unique tree. Correlation between Bayesian posterior probabilities and bootstrap percentages decreased in concert with decreasing information in the data partitions. In cases where nodes were supported by single characters bootstrap proportions were dramatically reduced compared with posterior probabilities. Two speciation patterns were evident from the phylogenetic analysis. First, most speciation is interisland and occurred as members of established ecological guilds colonized new volcanoes after they emerged from the sea. Second, there are several instances of rapid radiation into a variety of specialized habitats, in one case entirely within the island of Kauai. Application of a local clock procedure to the mitochondrial DNA topology suggests that two of these radiations correspond to the development of habitat on the islands of Kauai and Oahu. About 4.0 million years ago, species simultaneously moved into fast streams and plant leaf axils on Kauai, and about 1.5 million years later another group moved simultaneously to seeps and terrestrial habitats on Oahu. Results from the local clock analysis also strongly suggest that Megalagrion arrived in Hawaii about 10 million years ago, well before the emergence of Kauai. Date estimates were more sensitive to the particular node that was fixed in time than to the model of local branch evolution used. We propose a general model for the development of endemic damselfly species on Hawaiian Islands and document five potential cases of hybridization (M. xanthomelas x M. pacificum, M. eudytum x M. vagabundum, M. orobates x M. oresitrophum, M. nesiotes x M. oahuense, and M. mauka x M. paludicola).

Adaptation, Biological↗
PubMed2005

Molecular epidemiologic comparison of 2 unusual clusters of group a streptococcal necrotizing fasciitis in Hawaii.

Two clusters of necrotizing fasciitis (NF) due to group A streptococcus (GAS) were identified on the Hawaiian islands of Kauai and Maui during 1997 and 2002, respectively. The emm gene sequence types and the pulsed-field gel electrophoresis patterns were determined for 6 isolates recovered from patients with NF and for 116 isolates recovered from patients with temporally associated community-acquired GAS infection. No predominant emm type was identified, and the emm types of 64 (52.5%) of the isolates were considered to be uncommon in the continental United States. These findings suggest that unusual emm types might be responsible for invasive GAS infections in patients from Hawaii.

Adult↗
PubMed1978

Dietary intake and the risk of coronary heart disease in Japanese men living in Hawaii.

The relationship of dietary intakes to subsequent development of coronary heart disease (CHD) during a 6-year follow-up period was investigated in 7705 men of Japanese ancestry, ages 45 to 68 and living in Hawaii. Data on the intakes of calories and nutrients were obtained by 24-hr diet recall interviews at the base-line examination. An index for ingestion of traditional Japanese diet (Japanese diet score) was also calculated for each man. The men who subsequently developed myocardial infarction or died of CHD generally ate less than those who remained free of CHD, with statistically significant differences for total calories, total carbohydrate, complex carbohydrate or starch, simple carbohydrate other than sucrose, vegetable protein, alcohol, and Japanese diet score. However, when other major risk factors for CHD were taken into account, the negative association with CHD remained statistically significant only for alcohol and, to a lesser extent, total carbohydrate intakes. The lower total caloric intakes in CHD cases, largely due to decreased alcohol and carbohydrate intakes, could not be accounted for by either under-reporting of food consumption among obese men or diminished physical activity in CHD cases.

Aged↗
PubMed1985

The relationship between diet and bone mineral content of multiple skeletal sites in elderly Japanese-American men and women living in Hawaii.

The relationship of dietary intake of nutrients assessed by 24-h recalls and supplementary intake of selected minerals and vitamins to the bone mineral content (BMC) of the radius, ulna, and os calcis measured by the photon absorption technique was cross-sectionally studied in a sample of elderly Japanese residents (1208 men and 912 women) in Hawaii. Dietary intakes of milk, calcium, and vitamin D were significantly and positively associated with BMC in both sexes after adjusting for age, weight, height, strenuous exercise (men), history of nonviolent fracture, thiazide use, and estrogen use (women). However, independent contributions of milk or nutrients to BMC were only modest as compared with those of major confounders. No consistent result was obtained concerning the effects of supplementary minerals and vitamins upon BMC.

Adult↗
PubMed1987

Body weight, blood pressure, and electrolyte excretion of young adults from six ethnic groups in Hawaii.

There is positive correlation between high dietary intake of sodium and prevalence of hypertensive disease. Dietary potassium shows a negative correlation with this prevalence. Racial background of subjects may affect such relationships. This is a study of the relationships between ethnicity and blood pressure in young adults of six ethnic groups in Hawaii. Body weight, electrolyte excretion, which may reflect intake, and blood pressure of the subjects are reported here. Caucasians and Hawaiians and part-Hawaiian young adults tended to be taller and heavier than the Chinese, Filipinos, Japanese, and Koreans. Both systolic and diastolic pressures were significantly higher in males than in females (all races combined). No significant differences between sexes or races were found in urinary excretion of sodium and potassium or in urinary sodium:potassium ratios. Body weight and Quetelet's Index but not sodium:potassium ratio correlated significantly with diastolic pressure.

Adult↗
PubMed1978

Age at menopause in relation to reproductive history in Japanese, Caucasian, Chinese and Hawaiian women living in Hawaii.

A multiple regression analysis was undertaken to examine the relationship between age at menopause and selected biological and sociological variables in the reproductive history of Caucasian, Japanese, Chinese and part-Hawaiian post-menopausal women living in Hawaii. The analysis was conducted using the medical history records of 196 Caucasian, 181 Japanese, 72 Chinese and 60 Hawaiian women. Age at menarche, parity and months spent breast-feeding were found to have no significant effect on age at menopause. Regression models were not found to be heterogeneous among ethnic groups and no substantial interaction of ethnic group was found with age at menarche, parity or months spent breast-feeding.

Asian People↗
PubMed1982

Rubella seroepidemiology in Hawaii.

To determine rubella susceptibility levels 10 years after the introduction of the rubella vaccine in Hawaii, a large-scale serosurvey was conducted in conjunction with a campaign to raise the immunity levels of adolescent and adult women. Each woman tested for rubella antibody was asked her age, ethnic group, migration history, number of siblings, vaccination history, and the occupation of the head of the household. In the period from September 1977 through June 1979, serum specimens acceptable for analysis were collected from 3,852 women; 23.8% were susceptible (haemagglutination inhibition antibody titre less than 8) to rubella. A statistical analysis by fitting log-linear models revealed that rubella vaccination history, birthplace, ethnic group, number of siblings and island of residence appear to be factors related to rubella susceptibility. Although caution must be used in comparing this survey with previous surveys, the relatively low rubella susceptibility rate found in this survey may represent a true decrease in rubella susceptibility due to the rubella vaccination programme.

Adolescent↗
PubMed1990

Health risk behaviours and ethnicity in Hawaii.

This study has examined the relationships of health-related behaviours to sociodemographic factors with special emphasis on ethnicity in Hawaii. Behavioural variables investigated were non-use of car seat belts, overweight, physical inactivity, smoking, heavier alcohol use, and driving while intoxicated. Sociodemographic factors considered were ethnicity, island, sex, age, education, employment status, marital status, and household income. Major ethnic groups studied were Caucasians, Hawaiians including part-Hawaiians, Chinese, Filipinos, and Japanese. The relationships of ethnic factors with the behavioural characteristics were studied by logistic regression after fitting significant non-ethnic sociodemographic variables. Multiple risk behaviour was investigated by canonical correlation analysis. Different behavioural factors were found to be associated with different sets of non-ethnic socioeconomic variables. There were significant ethnic differences in individual at-risk behaviours except for driving while intoxicated. Overweight was most prevalent among Hawaiians followed by Caucasians. Caucasians and Hawaiians were at higher risk for non-use of seat belts, cigarette smoking, and heavier alcohol use compared to Chinese, Filipinos, and Japanese. Orientals were physically less active than Caucasians and Hawaiians. Implications of the observed ethnic differences are discussed.

Demography↗
PubMed1976

An epidemic of trichinosis after ingestion of wild pig in Hawaii.

Forty-five percent of young adults who ate roast wild pig at a barbecue in Hawaii experienced an illness compatible with trichinosis. Eosinophilia was present in all of those who were ill and in none who remained well. There were no positive results in skin tests with commercial skin-test antigen. Latex agglutination and counterelectrophoresis were equally good methods for the diagnosis of trichinosis and were more sensitive than the bentonite flocculation test. Levels of IgE in those with illness and eosinophilia were not significantly different from the levels in persons who remained well. It is concluded that skin tests should be abandoned until an improved antigen becomes available, that the relative value of diagnostic serologic methods require continued evaluation, and that levels of IgE may not rise significantly after trichinosis.

Adolescent↗
PubMed1978

Analysis of fecal bile acids and diet among the Japanese in Hawaii.

Fecal samples of 165 Japanese men in Hawaii, age 43 to 74, were analyzed for bile acid content by their conversion to the methyl ester and the trimethylsilyl ether derivative followed by separation on a gas chromatograph. The arithmetic mean of total bile acids for the 165 specimens was 10.96 mg/g dry weight feces. Each of the following bile acids was detectable in over 77% of the fecal specimens: cholic, deoxycholic, lithocholic, and cholanic acid. The intake of Western foods was not positively correlated with the fecal content of secondary or modified bile acids, even though other workers have observed that these bile acids predominated in persons from Westernized countries. Two of the Japanese foods were negatively correlated with the levels of modified bile acids, which suggested that these foods contributed to a decrease in modified bile acids in fecal specimens. Fecal bile acid measurements appeared to be associated with age, but not with weight, height, or serum cholesterol levels.

Adult↗
PubMed1977

Leprosy and cancer: a retrospective cohort study in Hawaii.

We used data collected on a retrospective cohort of 1,123 leprosy patients living in Hawaii between 1940 and 1970, to test the hypotheses that patients with lepromatous leprosy, who have an impairment in their cellular immune response, would have an increased risk for cancer and that patients with tuberculoid leprosy, who are immunologically competent, would have a normal or even a reduced cancer risk from beneficial stimulation of their cellular immune system by exposure to the Mycobacterium leprae organisms. Based on the survival analysis method, the results of the study supported the predicted increase in cancer cases among the lepromatous leprosy patients (19 observed, 12.7 expected; risk ratio = 1.5) and the predicted decrease among the tuberculoid leprosy patients (14 observed, 17.8 expected; risk ratio = 0.8); in both groups, the findings were consistent across the five racial categories of the study. However, none of these differences between observed and expected cases was statistically significant at the 5% level. The study provided no support for the alternate hypothesis that chronic antigenic stimulation by the M. leprae organisms might lead to an increase in tumors of the lymphoreticular system.

Adolescent↗
PubMed1989

Vegetable consumption and lung cancer risk: a population-based case-control study in Hawaii.

We conducted a population-based study of diet and lung cancer among the multiethnic population of Hawaii in 1983-1985. We completed interviews for 230 men and 102 women with lung cancer and 597 men and 268 women controls, frequency-matched to the patients by age and sex. A quantitative dietary history assessed the usual intake of foods rich in vitamins A and C and carotenoids. A clear dose-dependent negative association was demonstrated between dietary beta-carotene and lung cancer risk in both sexes. After adjusting for smoking and other covariates, the men in the lowest quartile of beta-carotene intake had an odds ratio of 1.9 (95% confidence interval, 1.1-3.2) compared to those in the highest quartile of intake. The corresponding odds ratio for women was 2.7 (95% confidence interval, 1.2-6.1). No clear association was found for retinol, vitamin C, folic acid, iron, dietary fiber, or fruits. All vegetables, dark green vegetables, cruciferous vegetables, and tomatoes showed stronger inverse associations with risk than beta-carotene. This observation suggests that other constituents of vegetables, such as lutein, lycopene, and indoles, and others, may also protect against lung cancer in humans.

Ascorbic Acid↗
PubMed1996

Family history and risk of colorectal cancer in the multiethnic population of Hawaii.

Increased risk of colorectal cancer in individuals with family history of the disease has been observed consistently in past studies. However, limited attention has been given to the influence of ethnicity, the characteristics of the proband's tumor, and kinship. A population-based case-control study was conducted between 1987 and 1991 in Hawaii among 1,192 incident colorectal cancer cases and 1,192 sex-, age-, and ethnicity-matched population controls. The study identified 7,673 relatives for the cases and 7,823 relatives for the controls. With an estimating equation-based regression method, relatives of cases were found to have a 2.5-fold increased risk of colorectal cancer compared with relatives of controls (95% confidence interval (CI) 1.8-3.4) after adjustment for covariates. This increase in risk was greater for Japanese (odds ratio (OR) = 3.0, 95% CI 1.7-5.4) than Caucasians (OR = 1.8, 95% CI 1.2-2.9), for siblings (OR = 3.1, 95% CI 2.1-4.6) than parents (OR = 2.0, 95% CI 1.1-3.1), and when the index patient was diagnosed before the age of 55 years (OR = 4.1, 95% CI 2.1-8.0) with multiple tumors (OR = 9.5, 95% CI 4.4-20.6), with a distant stage (OR = 4.6, 95% CI 2.7-7.8), or with cancer of the right colon (OR = 3.0, 95% CI 2.0-4.4) or the rectum (OR = 3.0, 95% CI 1.8-4.8). The increase in risk was not affected by the relative's sex. Relatives of cases were not at increased risk for other common cancers. It is estimated that approximately 11.1% and 6.5% of colorectal cancers are attributable to a first degree family history of the disease for Japanese and Caucasians, respectively. These data and those of previous studies strongly suggest that individuals with a family history of colorectal cancer in a first degree relative are at increased risk for the disease and should receive regular diagnostic screening. Characteristics of the index case, such as age and stage at diagnosis, subsite and number of tumors, and race, as well as kinship, may be important in assessing the colorectal cancer risk of a relative.

Aged↗
PubMed1996

Acculturation and prevalence of diabetes among Japanese-American men in Hawaii.

The association between acculturation to a Western lifestyle and prevalence of diabetes was examined among 8,006 Japanese-American men in Hawaii with varying degrees of exposure to traditional Japanese social and cultural lifestyles in 1965-1968. A reduced prevalence of diabetes was observed among the men who had retained a more Japanese lifestyle. These men also reported higher levels of physical activity and consumed more carbohydrates and less fat and animal protein in their diet. An inverse association between diabetes and being born in Japan was observed independent of age, body mass index, physical activity, and percentages of calories from fat or carbohydrates (odds ratios = 0.67 and 0.66, 95% confidence intervals 0.49-0.93 and 0.48-0.91, respectively). The number of total years lived in Japan was inversely associated with prevalent diabetes after controlling for age, body mass index, and physical activity (odds ratio = 0.81, 95% confidence interval 0.68-0.96). Current Oriental diet (compared with Western diet) was inversely associated with prevalent diabetes after controlling for age, body mass index, and physical activity (odds ratio = 0.71, 95% confidence interval 0.50-0.98). These findings suggest that living a Japanese lifestyle is associated with a reduced prevalence of diabetes.

Acculturation↗