Can a Brief Telephone Intervention for Problem Gambling Help to Reduce Co-existing Depression? A Three-Year Prospective Study in New Zealand.

Problematic gambling and depression commonly co-exist, with limited research indicating that depression and/or psychological distress appear to reduce with brief interventions for problem gambling. The present study was designed to examine the effect, over 36 months, of a brief problem gambling intervention on depression in a population of people seeking help for gambling issues. One-hundred and thirty-one participants were recruited from adult (18+ years) gambler callers to the New Zealand national gambling helpline. They received a manualised version of the helpline's brief intervention, and were assessed at baseline, 12 and 36 months. Overall, problem gambling severity reduced from a score of 17 (using the Problem Gambling Severity Index) at baseline to a score of 7.5 at 36 months. The percentage of participants with depression reduced from 74% at baseline to 41% at 36 months. For both problem gambling and depression, the greatest reduction was in the first 12 months. Multiple logistic regression analyses at baseline showed an association between problem gambling and depression. Repeated measures logistic regression indicated that reduced problem gambling severity reduced depression and that there was no independent time effect taking place (i.e. the decreased depression was not due to natural recovery). Thus a single brief telephone intervention for problem gambling substantially reduced the prevalence of depression. This has clinical and public health implications with a benefit being that people with depression and co-existing gambling problems may not necessarily need additional treatment for depression if they receive treatment for their gambling issues.

Ash in composting of source-separated catering waste.

Our earlier experiments in small composters (220 l) indicated the favourable effect of ash from co-incineration of sorted dry waste on the composting of catering waste. The aim of this new study was to clarify further, at a scale of 10 m3, the feasibility of using similar ash as an additive in composting. Source-separated catering waste was mixed with bulking agent (peat and wood chips) and fuel ash from a small (4 MW) district heating power plant. Three compost mixes (CM) were obtained: CM I with 0%, CM II with 10% and CM III with 20 wt.% of fuel ash. These three different mixes were composted in a 10-m3 drum composter as three parallel experiments for 2 weeks each, from January to April 2000. After drum composting, masses were placed according to mixing proportions in separate curing piles. The catering waste fed to the drum was cold, sometimes icy. Even then the temperature rapidly increased to over 50 degrees C. In CM III, the temperature rose as high as 80 degrees C, and after the first week of composting the temperature was about 20 degrees C higher in the CMs II and III than in the CM I. It also improved the oxygen concentrations at the feeding end of the drum and obviously prevented the formation of H2S. No odour problems arose during the composting. Addition of ash increased the heavy metal contents of the composting masses, but the compost was suitable for cultivation or green area construction. Ash clearly decreased the loss of total nitrogen in a time span of 2 years. The lower amounts of nitrogen mean that the amounts applied per hectare can be greater than for normal composts. Measured by mineralization, the breaking down of the organic matter was more rapid in the CM III than in the CM I. Humic acid increased steadily during first 12 months composting, from the initial 39 mg/g organic matter to 115 and 137 mg/g in CMs II and III. Measured by temperature, mineralization and humification the addition of ash appeared to boost the composting. Ash had also other beneficial effects on composting it improved the availability of oxygen in compost mass during the drum composting phase and reduced the formation of odorous gases, especially H2S.