The objective of this study was to describe patterns of substance use among remote Aboriginal community populations. The setting was the eastern Arnhem Land ('Miwatj') region of the Northern Territory's (NT) 'Top End', with a population of 4217 Aboriginal people over 15 years of age using a cross-sectional description and comparison. Sample 1 (n = 689) from the region used data from health-worker consensus classification of kava, alcohol, tobacco, petrol and cannabis use. Sample 2 (n = 101) from one community used self-reported use, age at commencement, duration, amounts consumed and expenditure. In 1999 (sample 1), 46% of males and 18% of females were kava users, alcohol: 53% males, 12% females, tobacco: 68% males, 65% females, and cannabis: 31% males, 8% females. Less than 5% sniffed petrol. In one community in 2000, 39% males and 20% females reported using cannabis during the previous month. In this community between 1999 and 2000, the proportion of current kava users among men declined (77-52%, p = 0.015) with a tendency in women for a decrease in the proportion of tobacco users (87-69%, p = 0.096). The increase in the proportion of cannabis users in men (21-39%, p = 0.068) was not statistically significant. However, in women the increase was significant (0-20%, p = 0.013). Gross expenditure on tobacco and kava were similar in 2000: both greater than cannabis and alcohol. Median years used ranged from 4 years for cannabis and 20 years for tobacco. The data supported anecdotes of a recent rise in cannabis use, especially in women. Kava use declined in men. Tobacco use patterns in women may have been changing. Average per capita consumption of alcohol was low compared with other 'Top End' areas. Such varied and dynamic substance use patterns pose challenges for research and policy.

The debate about the effects and public health importance of the way Aboriginal people drink kava has been confounded by claims, based on anecdote, of imputed health effects. Anecdote and comment have promoted the perception that dosage levels among Aboriginal people are much greater than in Pacific island societies. In this paper we review published data about kava consumption, and evaluate it with respect to information collected from observation of one Aboriginal community in Arnhem Land (Northern Territory) where people tend to consume kavaat a steady tempo; 37g of kava powder containing around 3800mg of kava lactones in 670ml of water in an hour. The highest levels of consumption in Arnhem Land have been reported to be up to 900g/week of kava powder with heavy consumers drinking at least 610g/week, levels comparable to estimates for Pacific‐island societies. The significance of a steady drinking tempo means that an individual's weekly kava consumption relates directly to the amount of time spent drinking which, in turn, is correlated with categories of social setting of drinking (p < 0.0002). Lone drinkers appear to be the heaviest users while lowest consumption takes place in private domestic situations, where people enjoy kava as part of family group activities. Surrogates of consumption levels may be found in local socio‐economic circumstances. This approach may be useful when more direct measurement of consumption is difficult or impossible.

Purpose The purpose of this paper is to examine the effect of falling commodity prices on farm debt usage of corn and soybean farms, and how this debt usage differs based on the financial leverage of the farm. Design/methodology/approach Using panel data on farms surveyed at least twice in the Agricultural Resource Management Survey (ARMS) from 1996 to 2015, this paper uses a difference-in-differences approach to measure the effect of low commodity price shocks on financially vulnerable farms. To account for the correlation in the error structure between the three dependent variables (real estate debt, non-real estate debt, and interest payments) we use a seemingly unrelated regression approach. Findings Following a commodity price shock, financially vulnerable farms (debt-to-asset ratio greater than 40 percent) were found to increase their non-real estate debt when compared with non-financially vulnerable farms. Off-farm business income was found to help farms reduce real estate debt and interest payments in the face of these shocks. Research limitations/implications Data consist of corn and soybean farms surveyed more than once in the ARMS from 1996 to 2015 and are not representative of all US farms, but have similar characteristics to US commercial farms. Social implications The results indicate that financially vulnerable commercial crop farms respond to lower prices by taking on non-real estate debt, increasing financial stress. Well-targeted federal programs could prevent further financial stress for this group. Originality/value This is the first paper to use unbalanced panel data from ARMS to examine how farm debt use responds to commodity prices. This paper can inform policymakers about the financial risks to farms resulting from the current low-price environment.

This study uses a newly created panel dataset drawn from the 1997 to 2013 Agricultural Resource Management Survey to provide the first national estimates of income volatility for commercial farm households in the United States. Results show that the income of commercial farm households is substantially more volatile than that of all U.S. households—though the volatility of farm income is not more volatile than income from nonfarm self‐employment. Using a regression analysis, we identify operator, operation, and regional characteristics associated with higher income volatility, providing information that could improve targeting of risk‐mitigating programs. We find that farm income volatility has declined for farms specializing in program crops in recent decades, supporting the hypothesis that the expansion of the federal crop insurance program helped reduce farm income risk.

This study examined blood lead and creatine kinase levels in a group of 24 Australian Aboriginal males admitted to the hospital for treatment of severe petrol sniffing related illness after using only leaded petrol and 27 sniffers, 16 ex-sniffers and 13 non-sniffers from an isolated Aboriginal community using only unleaded petrol. Creatine kinase levels (which were nearly all creatine kinase-skeletal muscle isoenzyme indicating skeletal muscle damage) were correlated with blood lead levels and were elevated in active sniffers of leaded petrol on admission to hospital but were also increased in those sniffing unleaded petrol in the remote community. After fourteen days in hospital, median creatine kinase levels of leaded petrol sniffers dropped rapidly to levels similar to those of ex-sniffers and non-sniffers while median blood lead levels decreased but still remained higher than the other three groups. The data suggest that elevated creatine kinase associated with petrol sniffing may be due to compounds in petrol other than the lead additives, possibly volatile hydrocarbon components. Elevated creatine kinase may be useful in detecting current petrol sniffing activity, particularly in locations using unleaded petrol.