Principal components analyses revealed that summary parameters derived from repeated cortisol measurements can be grouped into two meaningful general categories: measures of the magnitude of response and measures of the pattern of response over time.

Objectives To determine whether the dietary inflammatory index (DII) is associated with inflammatory or metabolic biomarkers and metabolic syndrome (MetSyn) among police officers. Methods Cross-sectional data from the Buffalo Cardio-Metabolic Occupational Police Stress study were derived from saliva and fasting blood samples, anthropometric measurements, long-term shiftwork histories, and demographic, stress/depression, and food frequency questionnaires. MetSyn was defined using standard criteria. Results Officers in DII quartiles 2–4 were more likely to exceed a 3.0mg/L threshold for C-reactive protein (odds ratio [OR]=1.88, 95% confidence interval [95%CI]=1.02–3.45; OR=2.17, 95%CI=1.19–3.95; OR=1.57, 95%CI=0.85–2.88, respectively) compared to quartile 1. The glucose intolerance component of MetSyn was more prevalent among officers in DII quartile 4 compared to quartile 1 (OR=2.03, 95%CI=1.08–3.82). Conclusions A pro-inflammatory diet was associated with elevated CRP and with the glucose intolerance component of the MetSyn.

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Police stressors were measured using Spielberger's Police Stress Survey with a sample of 103 police officers. Rankings of police stressors are discussed.

Following Hurricane Katrina, police officers in the New Orleans geographic area faced a number of challenges. This cross-sectional study examined the association between resilience, satisfaction with life, gratitude, posttraumatic growth, and symptoms of posttraumatic stress disorder in 84 male and 30 female police officers from Louisiana. Protective factors were measured using the Connor–Davidson Resilience scale, Satisfaction with Life Scale, the Gratitude Questionnaire, and the Posttraumatic Growth inventory. Symptoms of posttraumatic stress disorder were measured using the Posttraumatic Stress Disorder Checklist—Civilian (PCL-C). Potential associations were measured using linear regression and analysis of variance. Models were adjusted for age, sex, race, education, and alcohol. Mean PCL-C symptoms were 29.5 ± 14.5 for females and 27.8 ± 12.1 for males. Adjusted mean levels of PCL-C symptoms significantly decreased as quartiles of resilience (p <.001), satisfaction with life (p <.001), and gratitude (p <.001) increased. In contrast, PCL-C symptoms were not associated with posttraumatic growth in this sample. These results indicate that positive factors such as resilience, satisfaction with life, and gratitude may help mitigate symptoms of posttraumatic stress disorder. To further explore these relationships, longitudinal follow-up in a larger population would be of interest.

Actigraphy, a method for inferring sleep/wake patterns based on movement data gathered using actigraphs, is increasingly used in population-based epidemiologic studies because of its ability to monitor activity in natural settings. Using special software, actigraphic data are analyzed to estimate a range of sleep parameters. To date, despite extensive application of actigraphs in sleep research, published literature specifically detailing the methodology for derivation of sleep parameters is lacking; such information is critical for the appropriate analysis and interpretation of actigraphy data. Reporting of sleep parameters has also been inconsistent across studies, likely reflecting the lack of consensus regarding the definition of sleep onset and offset. In addition, actigraphy data are generally underutilized, with only a fraction of the sleep parameters generated through actigraphy routinely used in current sleep research. The objectives of this paper are to review existing algorithms used to estimate sleep/wake cycles from movement data, demonstrate the rules/methods used for estimating sleep parameters, provide clear technical definitions of the parameters, and suggest potential new measures that reflect intraindividual variability. Utilizing original data collected using Motionlogger Sleep Watch (Ambulatory Monitoring Inc., Ardsley, NY), we detail the methodology and derivation of 29 nocturnal sleep parameters, including those both widely and rarely utilized in research. By improving understanding of the actigraphy process, the information provided in this paper may help: ensure appropriate use and interpretation of sleep parameters in future studies; enable the recalibration of sleep parameters to address specific goals; inform the development of new measures; and increase the breadth of sleep parameters used.

Further inquiry into processes that lead to suicide in the police occupation is necessary. Suicide ideation in police officers and possible correlates associated with such ideation is explored in this paper. The focus was on psychologically traumatic police work experiences, the development of posttraumatic stress (PTSD) in officers, and the inordinate use of alcohol associated with this condition. The impact of these occupationally based factors and their association with suicide ideation has not yet been fully explored. Results suggest that certain traumatic police work exposures increase the risk of high level PTSD symptoms, which subsequently increase the risk of high alcohol use and suicide ideation. The combined impact of PTSD and increased alcohol use led to a ten-fold increase risk for suicide ideation.