Anchorage Community Survey 2007 Survey Sampling Design: Power and Sample Size

This working paper documents the power analysis, literature review, and precision considerations contemplated in designing the Anchorage Community Survey’s (ACS) 2007 sampling design. The ACS will obtain at least 30 completed surveys from individuals in each of the 55 census tracts that make up the Anchorage Municipality, allowing us to discern a fairly small effect size of 0.30 with our smallest anticipated intraclass correlation and a moderate effect size of 0.40 with our largest anticipated intraclass correlation, both at 0.80 power level. This cluster sample size and number of clusters should yield sufficient precision to allow good estimation of variance components and standard errors, acceptable reliability estimates, and reasonable aggregated measures of constructed neighborhood variables from individual survey item responses.Abstract / Introduction / Number of clusters (J) = 55 / Cluster Size (n) = 30 / Intraclass correlation (ρ)=.10 to .20 / Effect size (δ)=.30 or greater / Power Graphs / Support from the Literature / A Note on Precision / Reference

Collective Efficacy and Firearms Violence in Anchorage, Alaska: Preliminary Findings

Paper also presented at the 2007 annual meeting of the Western Society of Criminology, Scottsdale, Arizona.This paper seeks to advance the discussion of the utility of collective efficacy, as captured by Sampson, Raudenbush and Earls, in understanding community levels of crime by exploring the relation between community structure, collective efficacy, and in this case firearms violence, in Anchorage, Alaska. The specific aims of this paper are to report the results of a test of the collective efficacy thesis, modeled loosely after the test presented in the 1997 Science paper by Sampson, Raudenbush and Earls, as an explanation of neighborhood rates of firearms violence in Anchorage.Measures Replication and Data / Collective Efficacy and Violence in Anchorage / Discussion and Conclusions / References / Table

The Anchorage Community Survey, 2007: Sourcebook

A sample of 1,772 adult residents of the Municipality of Anchorage participated in a survey conducted by the Justice Center in late 2007. The results, compiled in this sourcebook — the second in a series of biannual surveys of the Anchorage municipality — provide one of the most detailed pictures available of community attitudes within the network of communities forming the Anchorage municipality, containing information on the demographics of residents, their perceptions of the life in their neighborhoods, social activities and organizations, and their satisfaction with various municipal and government functions, including policing. Survey results are presented in summary form for the entire municipality and also by community council area.Acknowledgements / Table of Contents / List of Tables / REPORT / Introduction / Methodology / Organization of the Sourcebook / Part 1. Life in Anchorage Neighborhoods / Part 2. Social Activities and Organizations / Part 3. Local Services // LOCATOR MAPS // TABLES / Respondent Demographic Characteristics / PART 1. LIFE IN ANCHORAGE NEIGHBORHOODS / Neighborhood / Racism / Informal Social Control / Violence / Community Disorder / Fear of Crime / Self-Protection / PART 2. SOCIAL ACTIVITIES AND ORGANIZATIONS / Social Ties / Residence / Organizations / PART 3. LOCAL SERVICES / Satisfaction with Local Services / Usage of Local Services / Local Government — Municipality of Anchorage / Health Care / Community Justice Centers / Police Effectiveness / Contact with Police // APPENDIX: Anchorage Community Survey 2007 Questionnair

Community Indicators Project at UAA: Anchorage Police Department Related Results

A sample of 1,772 adult residents of the Municipality of Anchorage participated in a survey conducted by the Justice Center in late 2007 — the second in a series of biannual surveys of the Anchorage municipality. The full report, contained in The Anchorage Community Survey, 2007, provides one of the most detailed pictures available of community attitudes within the network of communities forming the Anchorage municipality, containing information on the demographics of residents, their perceptions of the life in their neighborhoods, social activities and organizations, and their satisfaction with various municipal and government functions, including policing. This volume presents those results of particular relevance to the Anchorage Police Department on racism, violence, community disorder, fear of crime, satisfaction with police services, police effectiveness, and contact with police. Results are presented in summary form for the entire municipality and also by community council area.Abstract / Evaluation of Police Services and Contact with Police / Racism in Anchorage / Crime and Disorder / Fear of Crime in the Neighborhood / TABLES / Racism / Violence / Community Disorder / Fear of Crime / Satisfaction with Services / Police Effectiveness / Contact with Polic