Table 4

Response rates (%) for demographic groups by condition

Variable

Percentage of total

Short/$3

Short/$5

Long/$3

Long/$5


Race (n = 1,150)

Non-white

6%

46.4

54.8

45.5

52.9

White

94%

63.8

63.1

57.3

58.8

Gender -colon cancer only (n = 399)

Female

53%

43.4

47.5

41.3

39.6

Male

47%

46.8

51.3

38.9

40.4

Age (n = 1,138)

> = 65 Years

54%

57.5

58.4

52.6

51.9

< = 64 Years

46%

66.1

67.8

60.6

65.6

Stage of cancer (N = 1036)

0

10.9%

65.6

55.6

73.1

64.3

I

19.3%

69.2

67.3

66.1

62.8

II

48.6%

70.4

71.6

65.1

68.2

III

13.8%

64.7

61.8

65.4

46.9

IV

7.3%

42.9

52.6

26.7

52.4


aNon-missing n = 1,031. Gender is only presented for colon cancer participants. Results of logistic regression models with interaction terms suggest that none of the variables interacted with condition.

Kelly et al. BMC Medical Research Methodology 2010 10:65   doi:10.1186/1471-2288-10-65

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