The moderating effect of substance abuse service accessibility on the relationship between child maltreatment and neighborhood alcohol availability

This study investigates how the relationship between dense concentrations of alcohol retailers and high rates of child maltreatment may be moderated by the presence of substance abuse service facilities. Using a cross-sectional design, the study utilized data from Bergen County, New Jersey on child maltreatment reports, alcohol-selling retailers, substance abuse service facilities, and the United States Census. Findings indicate child maltreatment rates were higher in neighborhoods with lower socioeconomic status and those with greater alcohol outlet density. Neighborhoods with easily accessed substance abuse service facilities had lower rates of child maltreatment. Additionally, the relationship between child maltreatment and alcohol outlet density was moderated by the presence of substance abuse service facilities. The study findings highlight the relevance of making primary prevention approaches readily available and using multi-sector collaboration to reduce child maltreatment.     

Modified S-charts for controlling process variability

To help in the detection of variance increases and decreases, three modified versions of traditional Shewhart S-charts are evaluated in terms of their average run length values. One scheme uses control limits based on equal tail chi-square distribution probabilities. The second uses control limits based on unequal tail probabilities. The third uses warning limits based on equal tail probabilities, but requires two successive points beyond the warning limit to give an out-of-control signal. They all result in better average run length values than the traditional S-chart. Also, if the only concern is the detection of variance increases, then both S-charts and warning limit charts without lower control limits are shown to have better average run length values than those of the traditional charts.     

I hardly see my baby: challenges and highlights of being a New Zealand working mother of an infant

Combining motherhood and paid work presents a significant challenge for many women. We asked 2388 working New Zealand mothers of infants about their biggest highlight and challenge since the birth of their child. Thematic analysis revealed the top three reported highlights were Enjoyment of the Child (40%), Child Development (29%) and Attributes of the Child (16%). The top three challenges included Time Management (24%), difficulties with maternal role and responsibilities (21%) and work-related challenges (18%). Using logistic regression, working was more likely to be reported as a challenge by mothers who worked longer hours, returned to work when their infants were younger, had greater household incomes, or expressed concern about negative career consequences if they stayed on leave. Working was less likely to be reported as a challenge for mothers whose infants had health or developmental problems and who ‘wanted to get out of the house’. Practical implications are explored.     

Estimation of population size and survival of sheep blowfly,Lucilia cuprina, in the field from serial recoveries of marked flies affected by weather dispersal and age-dependent trappability

Summary A model is presented for analysis of mark-recapture data of mobile insects which, unlike the Lincoln Index, does not require marked individuals to remain within the sampling area or to mix uniformly with the wild population. The model assumes a single or multiple releases of marked insects from the centre of the sampling area and that captured individuals are not returned to the population. Dispersal rates of marked insects are estimable from serial recaptures and, for catches that are either unaffected by or have been corrected for weather effects, the model also provides estimates of mortality and age-dependent trappability. Application of the model is illustrated using mark-recapture data for adults of the Australian sheep blowflyLucilia cuprina. A Biometrics Unit report detailing all source data, program code and comparisons between dispersal models is available on request from the authors.     

Summary measurements and screening in clinical trials with replicate observations

Repeating measurements of efficacy variables in clinical trials may be desirable when the measurement may be affected by ambient conditions. When such measurements are repeated at baseline and at the end of therapy, statistical questions relate to: (1) the best summary measurement to use for a subject when there is a possibility that some observations are contaminated and have increased variances; and (2) the effect of screening procedures which exclude outliers based on within- and between-subject contamination tests. We study these issues in two stages, each using a different set of models. The first stage deals only with the choice of the summary measure. The simulation results show that in some cases of contamination, the power achieved by the tests based on the median exceeds that achieved by the tests based on the mean of the replicates. However, even when we use the median, there are cases when contamination leads to a considerable loss in power. The combined issue of the best summary measurement and the effect of screening is studied in the second stage. The tests use either the observed data or the data after screening for outliers. The simulation results demonstrate that the power depends on the screening procedure as well as on the test statistic used in the study. We found that for the extent and magnitude of contamination considered, within-subject screening has a minimal effect on the power of the tests when there are at least three replicates; as a result, we found no advantage in the use of screening procedures for within-subject contamination. On the other hand, the use of a between-subject screening for outliers increases the power of the test procedures. However, even with the use of screening procedures, heterogeneity of variances can greatly reduce the power of the study.     

‘Another Europe is possible’? Labour and social movements at the European social forum

The first European Social Forum (ESF) held in Florence, Italy from 6 to 10 November 2002 brought together a diverse array of so-called ‘anti-capitalist’ movements including trade unions, new, radical unions and social movements to contest the agenda of neoliberalism as it is presented within and beyond processes of European integration. This article evaluates the ESF and the possibilities for cooperation between labour and social movements in forming joint strategies against neoliberalism. It is often assumed—rather than demonstrated—that established trade unions are an obstacle to more radical contestatory practices of direct-action social movement resistance. With detailed empirical analysis, the article assesses whether there was a continuation of reformist practices within unionist activities at the ESF allied with a focus on the often-contrary sensibilities of social movement opposition. The activities and joint strategies of labour and social movements at the ESF are therefore examined, not least their resistance to both neoliberalism and its ultimate extra-economic enforcement through military power as evidenced by the war on Iraq. Whilst conclusions about the efficacy of future cooperation are cautious it appears that the horizons of resistance are expanding not only within Europe but also at the global level.