5% of those 40 or younger, 797% of those 40-49, 837% of those 5

5% of those 40 or younger, 79.7% of those 40-49, 83.7% of those 50-59, and 57.7% of those 60 or older gave a correct response to the question. The percentage of correct responses differed by both age and race/ethnicity for some questions. Because age did not differ statistically significantly across race/ethnic groups for respondents, age-standardized analyses were not performed. Regarding differences by age, those who were 60 or older were significantly less likely to respond correctly to all questions except those regarding vertical transmission and transmission by blood transfusion, needle stick, and injection drug use. Those who were 40 or younger were less likely to have given

a correct response Sorafenib supplier to the question regarding whether an infected person is likely to carry HCV all their life. For one question (“Someone with hepatitis C can look and feel fine”), the difference is not reported as significant, in spite of a chi-square P < 0.05, because the Target Selective Inhibitor Library research buy test may not be valid as a result of a large number

of small cells. Significant differences in the proportion of correct responses were also found for some of the knowledge questions by race/ethnicity. The proportion who responded correctly to the question about vertical transmission was low for all race/ethnic groups. Black non-Hispanics were less likely to respond correctly to the questions regarding carrying HCV for life, as well as transmission by shaking hands with or kissing an HCV-infected 上海皓元 person or by injection drug use. As a group, Hispanics, those of other races, and those who reported multiple races were also less likely to have given a correct response regarding transmission by kissing. For the questions regarding transmission by blood transfusion and by needle stick, differences are not reported as significant, in spite of a chi-square P < 0.05, because the test may not be valid as a result of a large number of small cells (e.g., blood transfusion) or to a zero cell (e.g., needle stick).

Male and female respondents differed only on the question regarding transmission by blood transfusion, with 98.3% of females having given a correct response, compared to 86.5% of males (Fisher’s exact two-sided test; P = 0.008). Table 5 shows the percent of respondents with a correct response to each of the knowledge questions based on having heard of hepatitis C before receiving the ROF letter, having been aware of their HCV infection before receiving the ROF letter, and having visited a doctor or other healthcare professional about their first positive HCV test result. Thus, for the first question (“If someone is infected with hepatitis C virus, they will most likely carry the virus all their lives”), approximately three quarters of those who had heard of hepatitis C before receiving the ROF letter and approximately 60% of those who had not heard of hepatitis C before receiving the ROF letter gave a correct response to the question.

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