Driving under the influence behaviours among high school students who mix alcohol with energy drinks.

Alcohol and energy drinks are commonly used substances by youth in Canada, and are often mixed (AmED). While several studies have shown that AmED can have dangerous effects, less well understood is how AmED is associated with driving under the influence of either alcohol or drugs. This study sought to determine whether youth who use AmED were more likely to engage in driving, or being a passenger of a driver, under the influence of alcohol or cannabis compared to youth who use either alcohol or energy drinks alone. This study used data from grade 10-12 students who took part in the 2014/2015 Canadian Student Tobacco, Alcohol and Drugs Survey (N=17,450). The association of past-year AmED use with past-30day: driving under the influence of alcohol or cannabis, and riding with an alcohol- or cannabis-influenced driver, was assessed using logistic regression. One in four youth had consumed AmED in the previous 12months. AmED users were more likely to engage in all risk behaviours except riding with a drinking driver, relative to youth who only consumed alcohol. No association was observed for youth who consumed alcohol and energy drinks on separate occasions. Youth who use AmED demonstrate a higher risk profile for driving under the influence of alcohol or cannabis, than youth who use alcohol alone. Future research should explore the biopsychosocial pathways that may explain why using energy drinks enhances the already heightened risk posed by alcohol on other health-related behaviours such as driving under the influence.

Longitudinal associations of cannabis and illicit drug use with depression, suicidal ideation and suicidal attempts among Nova Scotia high school students.

OBJECTIVE: To examine associations of cannabis and other illicit drug use with depression, suicidal ideation and suicidal attempts over a two year period during adolescence. METHODS: Nine hundred and seventy-six school students in four high schools in northern Nova Scotia, Canada, were surveyed in grade 10 and followed up in grade 12. Assessments of past 30 day cannabis and illicit drug use as well as mental health variables (risk of depression, suicidal ideation and suicide attempts) were obtained at baseline (2000 and 2001) and follow-up two years later (2002 and 2003). Generalized estimating equations modelled depression, suicidal ideation and attempts among illicit drug users and non-users. RESULTS: Illicit drug use with or without cannabis use was significantly associated with higher odds of depression, suicidal ideation and suicide attempt. Heavy cannabis use alone predicted depression but not suicidal ideation or attempt. CONCLUSIONS: Illicit drug use, with and without accompanying cannabis use, among high school students increases the risk of depression, suicidal ideation and suicidal attempts. Heavy cannabis use alone predicts depression but not suicidal ideation or attempts.

Gender differences in knowledge about chlamydia among rural high school students in Nova Scotia, Canada.

BACKGROUND: Chlamydia is the most prevalent sexually transmissible infection (STI) in Canadian adolescents. STI account for 20% of cases of infertility in Canada and 42% of ectopic pregnancies are attributable to previous chlamydia infection. Despite the importance of this infection, little is understood about young people's knowledge of it. METHODS: A survey was conducted at a rural high school in Nova Scotia, Canada, to assess students' knowledge of chlamydia and associations of knowledge with gender and protective behaviours. Knowledge was assessed using true-false responses to 15 statements about chlamydia. Each statement was examined for differences in the percentage of correct responses by sex. Correct responses were summed, creating a knowledge score. Socioeconomic status variables and age were included in multivariate regression models to determine if they modified associations between knowledge score and protective behaviours seen in simple regression. RESULTS: Eighty-six percent of registered students (n = 538) participated in the survey. Girls responded to 10 of the 15 knowledge statements significantly more often than boys. Respondents were least knowledgeable about their rights to confidential health services for chlamydia infection. Knowledge score was associated with use of both condoms and oral contraception at last intercourse in girls (odds ratio 1.15; 95% confidence interval 1.01-1.31). No association of knowledge score was seen with having had an STI test in the previous year. CONCLUSIONS: School sexual health programs should make special efforts to meet the needs of male students, and programs and health professionals should include information about the confidential nature of sexual health services for adolescents.

A pilot project for chlamydia screening in adolescent females using self-testing: characteristics of participants and non-participants.

OBJECTIVES: A self-test screening program for genital C. trachomatis infection in female students attending high school in rural Nova Scotia was introduced. The objectives of this pilot study were to determine the extent of uptake, reasons for being/not being screened, and whether students at risk would be more likely to be screened. METHODS: The screening program was carried out between September 2005 and May 2006. Test kits were accessed through the school's health centre without first seeing the school nurse for counselling. Tests were processed non-nominally at the laboratory. A cross-sectional survey was offered to all students in the school to assess factors related to participation or non-participation. Univariate analysis was carried out for young women's sexual activity and risk taking, reasons for being participants or non-participants, risk behaviours, and knowledge about chlamydia. RESULTS: One hundred and sixty-three women (58%) had had vaginal intercourse at least once. Twenty-four of these used the self-test kit. Though 83% of those not using the self-test knew that females with chlamydia are very often asymptomatic, 54% indicated lack of symptoms as a reason for not doing so. Many (49%) gave low probability of infection as a reason for not using the kit, but high-risk sexual activity was frequent in these young DISCUSSION: Uptake of self-testing for C. trachomatis was lower than anticipated. This may be due to lack of counselling meant to encourage testing to overcome a dissonance of knowledge and behaviour. Self-testing should be further explored to better understand its potential to increase chlamydia screening among Canadian adolescents.

Factors associated with PAP testing in adolescents in northern Nova Scotia.

OBJECTIVE: To determine relationships of socio-economic factors and contraceptive behaviours with PAP testing in sexually active women aged 15-19 who had received physician services in northern Nova Scotia in the previous year. METHODS: A cross-sectional survey was completed by adolescents attending four high schools in three counties in northern Nova Scotia. Questions concerned contraceptive behaviours, socio-economic status and health services use, including PAP testing. Associations of socio-economic factors and contraceptive behaviours with receipt of a PAP test in the previous year were examined in women who were sexually active for at least one year, and who also had visited a physician during the previous year. RESULTS: One thousand and ninety adolescent women aged 15-19 completed surveys, with a response rate of 91%. Of the 396 (36.3%) who reported being sexually active and having visited a physician in the previous year, 393 provided information about PAP testing. Of these, 214 (54.5%) reported receiving a PAP test. Factors associated with PAP testing included viewing one's family as advantaged and living in a major town as opposed to a more rural area. Compared with using hormonal contraception, using either condom without other effective contraception or no effective contraception at last intercourse were negatively associated with PAP testing. CONCLUSIONS: These findings suggest that physicians use hormonal contraception as a cue for PAP testing in adolescent women. Guidelines call for regular PAP testing of sexually active adolescents, and efforts to increase adolescent PAP testing should include professional development to increase recognition of sexual activity.

Association of socio-economic factors with health risk behaviours among high school students in rural Nova Scotia.

OBJECTIVE: To determine the association of socio-economic (SES) factors with risk behaviours among adolescents. METHODS: A cross-sectional survey was carried out on students in four high schools in northern Nova Scotia, Canada. Associations between SES variables and substance use behaviours, having early intercourse and suicide attempt in the past year were examined using multivariate analysis (logit regression). Negative binomial regression was performed for associations of SES with a total risk score summing risk behaviours. RESULTS: Participants included 2,198 students (48% males; 52% females) ranging in age from 14 to 20 years. Almost 25% of youth smoked regularly, 19% of males smoked marijuana > or = 10 times monthly, more than 40% of males regularly drank excessively, and 10% of students > 14 years old had had intercourse before age 15. Smoking was the behaviour most often associated with lower SES in both genders. Mother's not being employed was protective against all substance use variables except driving after drinking. Living both with lone mother and in any family arrangement other than with both parents was associated with smoking, using marijuana, and early sex. Higher risk score was associated with living with a lone mother or other family arrangement. Lower risk score was associated with father having more than high school education and mother not working. INTERPRETATION: Lower socio-economic status is associated with adolescent risk behaviours. These findings point to the importance of these factors to risk-taking in youth, their relevance to social policy, and also their importance as factors to consider in targeted interventions.