2011 Housing Planning Study - Technical Report

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HOUSING DEMAND SURVEY This study was conducted as an update to the Hawaii Housing Policy Study, 2006. The research design was developed to match past survey content, sampling method, data collection and data processing procedures as closely as possible. There were several important differences initiated for the 2011 study: (1) the survey content was streamlined and the instrument was a bit shorter than in previous years; (2) the sample was considerably larger than in 1992 and 1997, and somewhat more complex in design; and (3) additional measures were included to evaluate risk of homelessness, elderly housing needs and issues related to rail transit. METHODS SMS Research designed the survey instrument with input from the Hawaii Housing Finance and Development Corporation (HHFDC), County Housing Agencies, the Department of Hawaiian Home Lands, and private sector housing interests across the state. The reviewers suggested several changes in content, and most of those changes were incorporated in the final survey instrument. The final version of the survey instrument is shown in the Appendix A. Each County was divided into several sub-areas for the survey. These geographic survey areas may not correspond exactly to those used in previous iterations of the HHPS, but are very similar. The sample sizes for the geographic subdivisions survey were sufficient to produce results that are statistically accurate within plus-or-minus five percentage points at the 95 percent confidence level. Thirty pre-test surveys were conducted among Hawaii households using the same methodology as were employed for the actual survey. The purpose of the pre-test was to determine whether survey items were understandable to the general public, included the most appropriate response options, and were arranged in the proper order for effective inquiry. Some minor changes to the survey content were made as a result of the pretest. These are reflected in the survey instrument as shown in the Appendix. Sampling The target population for this survey included all residents of the State of Hawaii residing in non-institutionalized housing units with working telephone service at the time of the study. The sample design was a dual frame design in which independent samples are selected from two different sampling frames representing the same population. In this case the two frames were the list of Iandline telephone numbers active at the time of the survey and the list of wireless telephone (cell phone) number active in Hawaii at the same time. Two independent samples with identical designs were selected, one from each frame. The samples were both random digit dialing (RDD), disproportionate across geographic area and random within areas. In the case of the Iandline sample, independent samples were selected for each of the required geographic areas (see below). The frame was the SMS RDD sample Hawaii Housing Planning Study,2011: Technical Report Page 6 0 SMS, Inc. November,2011