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Biostatistics

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REVIEW QUESTIONS AND EXERCISES 483<br />

A B A B A B<br />

20.00 .154 22.34 .147 48.66 .569<br />

36.00 .221 18.00 .132 20.00 .227<br />

6.97 .129 18.00 .085 17.66 .125<br />

13.67 .064 22.66 .577 14.34 .089<br />

36.34 .402 45.34 .134 16.33 .051<br />

39.66 .256 20.33 .246 18.34 .100<br />

14.66 .188 16.00 .175 26.49 .202<br />

27.00 .138 15.66 .105 13.33 .077<br />

2.66 .078 23.00 .145 6.00 .206<br />

22.00 .142 27.33 .129 15.67 .153<br />

11.00 .086 6.27 .062 32.33 .549<br />

20.00 .170 24.34 .147<br />

22.66 .198 22.33 .769<br />

7.34 .092 11.33 .130<br />

29.67 .227 6.67 .099<br />

11.66 .159<br />

8.05 .223<br />

22.66 .065<br />

Source: Data provided courtesy of Dr. Magdalena Czader and Dr. Anna Porwit-MacDonald.<br />

45. Fleroxacin, a fluoroquinolone derivative with a broad antibacterial spectrum and potent activity in<br />

vitro against gram-negative and many gram-positive bacteria, was the subject of a study by Reigner<br />

and Welker (A-34). The objectives of their study were to estimate the typical values of clearance over<br />

systemic availability (CL/F) and the volume of distribution over systemic availability (V/F) after the<br />

administration of therapeutic doses of fleroxacin and to identify factors that influence the disposition<br />

of fleroxacin and to quantify the degree to which they do so. Subjects were 172 healthy male and<br />

female volunteers and uninfected patients representing a wide age range. Among the data analyzed<br />

were the following measurements (ml/min) of CL/F and creatinine clearance (CLcr). According to<br />

the authors, previous studies have shown that there is a correlation between the two variables.<br />

CL/F CLer CL/F CLer CL/F CLer CL/F CLer<br />

137.000 96.000 77.000 67.700 152.000 109.000 132.000 111.000<br />

106.000 83.000 57.000 51.500 100.000 82.000 94.000 118.000<br />

165.000 100.000 69.000 52.400 86.000 88.000 90.000 111.000<br />

127.000 101.000 69.000 65.900 69.000 67.000 87.000 124.000<br />

139.000 116.000 76.000 60.900 108.000 68.700 48.000 10.600<br />

102.000 78.000 77.000 93.800 77.000 83.200 26.000 9.280<br />

72.000 84.000 66.000 73.800 85.000 72.800 54.000 12.500<br />

86.000 81.000 53.000 99.100 89.000 82.300 36.000 9.860<br />

85.000 77.000 26.000 110.000 105.000 71.100 26.000 4.740<br />

122.000 102.000 89.000 99.900 66.000 56.000 39.000 7.020<br />

76.000 80.000 44.000 73.800 73.000 61.000 27.000 6.570<br />

57.000 67.000 27.000 65.800 64.000 79.500 36.000 13.600<br />

62.000 41.000 96.000 109.000 26.000 9.120 15.000 7.600<br />

90.000 93.000 102.000 76.800 29.000 8.540 138.000 100.000<br />

(Continued )

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