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Dunedin Multidisciplinary Health (dunedin + multidisciplinary_health)

Distribution by Scientific Domains

Medical Sciences	100%

Selected Abstracts

A longitudinal study of cannabis use and mental health from adolescence to early adulthood

ADDICTION, Issue 4 2000
Rob McGee
Aims. To examine the longitudinal association between cannabis use and mental health. Design. Information concerning cannabis use and mental health from 15 to 21 years was available for a large sample of individuals as part of a longitudinal study from childhood to adulthood. Participants. Participants were enrolled in the Dunedin Multidisciplinary Health and Development Study, a research programme on the health, development and behaviour of a large group of New Zealanders born between 1 April 1972 and 31 March 1973. Measurements. Cannabis use and identification of mental disorder was based upon self-report as part of a general assessment of mental health using a standard diagnostic interview. Daily smoking and alcohol use at age 15 were assessed by self-report. Indices of family socio-economic status, family climate and parent - child interaction were formed using information gathered from parent report and behavioural observations over early childhood. Childhood behaviour problems were assessed by parent and teacher report. Attachment to parents was assessed in adolescence. Findings. Cross-sectional associations between cannabis use and mental disorder were significant at all three ages. Both outcome variables shared similar pathways of low socio-economic status and history of behaviour problems in childhood, and low parental attachment in adolescence. Mental disorder at age 15 led to a small but significantly elevated risk of cannabis use at age 18; by contrast, cannabis use at age 18 elevated the risk of mental disorder at age 21. The latter association reflected the extent to which cannabis dependence and other externalizing disorders at age 21 were predicted by earlier level of involvement with cannabis. Conclusions. The findings suggest that the primary causal direction leads from mental disorder to cannabis use among adolescents and the reverse in early adulthood. Both alcohol use and cigarette smoking had independent associations with later mental health disorder. [source]

Oral health-related quality of life in a birth cohort of 32-year olds

COMMUNITY DENTISTRY AND ORAL EPIDEMIOLOGY, Issue 4 2008
Herenia P. Lawrence
Abstract,,, Objectives:, To describe oral health-related quality of life (OHRQoL) among New Zealand adults and assess the relationship between clinical measures of oral health status and a well-established OHRQoL measure, controlling for sex, socioeconomic status (SES) and use of dental services. Methods:, A birth cohort of 924 dentate adults (participants in the Dunedin Multidisciplinary Health and Development Study) was systematically examined for dental caries, tooth loss, and periodontal attachment loss (CAL) at age 32 years. OHRQoL was measured using the 14-item Oral Health Impact Profile questionnaire (OHIP-14). The questionnaire also collected data on each study member's occupation, self-rated oral health and reasons for seeing a dental care provider. SES was determined from each individual's occupation at age 32 years. Results:, The mean total OHIP-14 score was 8.0 (SD 8.1); 23.4% of the cohort reported one or more OHIP problems ,fairly often' or ,very often'. When the prevalence of impacts ,fairly/very often' was modeled using logistic regression, having untreated caries, two or more sites with CAL of 4+ mm and 1 or more teeth missing by age 32 years remained significantly associated with OHRQoL, after adjusting for sex and ,episodic' dental care. Multivariate analysis using Poisson regression determined that being in the low SES group was also associated with the mean number of impacts (extent) and the rated severity of impacts. Conclusions:, OHIP-14 scores were significantly associated with clinical oral health status indicators, independently of sex and socioeconomic inequalities in oral health. The prevalence of impacts (23.4%) in the cohort was significantly greater than age- and sex-standardized estimates from Australia (18.2%) and the UK (15.9%). [source]

Dental neglect and dental health among 26-year-olds in the Dunedin Multidisciplinary Health and Development Study

COMMUNITY DENTISTRY AND ORAL EPIDEMIOLOGY, Issue 6 2000
W. Murray Thomson
Abstract ,Objectives: To test a modification of a previously-reported six-item dental neglect scale and examine its association with dental health and service-use among young adults. Methods: Of the 980 26-year-old participants in the Dunedin Multidisciplinary Health and Development Study, 973 completed the scale and 930 underwent dental examination. Sociodemographic and dental service-use data were collected using a self-report questionnaire. Results: Factor analysis showed that five of the original six items loaded on the scale, and responses to those items were summed to give a dental neglect scale score for each participant. Scale scores were normally distributed (mean=13.0; SD=3.6; range 5 to 25), and a median split created higher and lower dental neglect groups. A higher proportion of the higher neglect group group: (i) were male; (ii) rated their dental health and dental appearance as below average; (iii) brushed their teeth infrequently; (iv) had extensive plaque deposits; (v) used dental services only when they had a problem; (vi) had not recently seen a dentist; (vii) had lost at least one permanent tooth because of caries, and (viii) had a greater number of decayed tooth surfaces. Conclusions: Although further examination of its validity and reliability is indicated, the dental neglect scale appears to hold promise for use in dental health promotion, not only in highlighting population groups or individuals who would benefit from intensive health promotion efforts, but also in the evaluation of health promotion interventions. [source]