Assistive Technology and Information Technology Use and ...

One reason for the discrepancy was the quality of the samples. Figure 3.5 shows how many more nonsample numbers were in the RDD list. Nonworking numbers, nonresidential and other nonsamples, including all problem numbers and other non-households, accounted for 35 percent of the RDD numbers as compared to 10 percent of the numbers from the list. ................
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