In this exercise, assume that the term “admission” in Table 2.15 refers to inpatient care, while “any use” refers to inpatient and outpatient care.

Table 2.15 contains a lot of information. Without looking at any specific values, summarize what type of data the table contains. Give an example of a broad question about income levels and demand for health care that the table might have the potential to answer.

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Table 2.15. Various measures of predicted annual use of medical services by income group. Income Significance tests t on contrast of: Lowest third Plan mean Likelihood of any use (percent) 82.8 Free Family pay 25 percent 50 percent 95 percent Free Family pay 25 percent 50 percent 95 percent Expenses (1984 $) Free Family pay 71.8 64.7 61.7 Likelihood of one or more admissions (percent) 10.63 10.14 25 percent 50 percent 95 percent 10.03 9.08 8.77 788 Middle third mean 680 610 581 87.4 80.1 76.2 68.9 8.44 8.06 7.38 736 588 550 494 Highest third mean 90.1 84.8 82.3 73.8 10.35 7.97 7.77 7.07 809 623 590 527 Middle vs. lowest thirds" 4.91 5.45 4.35 3.96 -0.91 -2.95 -1.78 -2.79 -1.78 -3.17 -1.89 -3.09 Highest vs. lowest thirds² 5.90 6.28 4.86 4.64 -0.35 -2.75 -1.66 -2.46 0.53 -1.47 -0.49 -1.41