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Table 3 Clinical characteristics (N = 487)

From: How do study design features and participant characteristics influence willingness to participate in clinical trials? Results from a choice experiment

Characteristic

Value

Diagnosed indication a, n (%)

 Cancer

183 (38)

  Higher mortality cancers

87

  Lung cancer

22 (12)

  Colorectal cancer

12 (7)

  Liver cancer

12 (7)

  Stomach cancer

3 (2)

  Ovarian cancer

22 (12)

  Multiple myeloma

6 (3)

  Leukemia or another blood-related cancer

15 (8)

 Lower mortality cancers

96

  Breast cancer

39 (21)

  Melanoma / skin cancer

23 (13)

  Prostate cancer

32 (17)

  Thyroid cancer

9 (5)

 Heart disease

122 (25)

 Migraine

178 (37)

 Multiple sclerosis

51 (10)

 Rheumatoid arthritis

134 (28)

 Anemia

93 (19)

 Anxiety

111 (23)

 Depression

106 (22)

 Diabetes (Type I or Type II)

106 (22)

Number of medical conditions b, n (%)

 1

200 (41)

 2

115 (24)

  ≥ 3

172 (35)

Number of previous lines of treatment, n (%)

 0 treatment

41 (8)

 1–2 treatments

146 (30)

 3–4 treatments

132 (27)

  ≥ 5 treatments

168 (34)

Treatment options are available for condition, n (%)

 There are not many alternative treatments available

98 (20)

 There are some alternative treatments available

203 (42)

 There are lots of alternative treatments available

115 (24)

 Don't know

71 (15)

Affordability of current medication

 I can easily afford my medications

168 (34)

 I can afford my medications

272 (56)

 I struggle to pay for my medications

47 (10)

Experience of treatment side effects, n (%)

 I have not experienced any side effects

155 (32)

 I have experienced mild side effects

249 (51)

 I have experienced severe side effects

83 (17)

Satisfaction with current disease management, n (%)

 Not at all satisfied

69 (14)

 Moderately satisfied

263 (54)

 Very much satisfied

155 (32)

Quality of Life (Classification) c

 0–3

106 (22)

 4–7

128 (26)

 8–11

103 (21)

 12–15

87 (18)

 16–19

44 (9)

 20–24

19 (14)

I feel fatigued

 Not at all / A little bit

209 (43)

 Somewhat

129 (26)

 Quite a bit / Very much

149 (31)

I have had difficulty with mobility

 Not at all / A little bit

336 (69)

 Somewhat

84 (17)

 Quite a bit / Very much

67 (14)

I have had pain or discomfort

 Not at all / A little bit

244 (50)

 Somewhat

121 (25)

 Quite a bit / Very much

122 (25)

I have been anxious or depressed

 Not at all / A little bit

276 (57)

 Somewhat

87 (18)

 Quite a bit / Very much

124 (25)

I have to limit my social activity because of my health

 Not at all / A little bit

282 (58)

 Somewhat

98 (20)

 Quite a bit / Very much

107 (22)

I have had difficulty with performing my usual activities

 Not at all / A little bit

310 (64)

 Somewhat

107 (22)

 Quite a bit / Very much

70 (14)

Self-perceived health status, n (%)

 Excellent or Very Good

71 (15)

 Good

176 (36)

 Fair

190 (39)

 Poor

50 (10)

Self-perceived likelihood to live to average age d, n (%)

 Likely / Highly likely

261 (54)

 Neutral

125 (26)

 Highly unlikely / Unlikely

80 (16)

 Not sure / Don't know

21 (4)

Self-perceived future quality of life, n (%)

 Much better / Somewhat better in 10 years than now

91 (19)

 About the same in 10 years than now

145 (30)

 Somewhat worse / Much worse in 10 years than now

251 (52)

  1. a Not mutually exclusive. Denominator used for percentages is the overall sample n = 487, except for cancer subtypes where the denominator is the number reporting any cancer diagnosis (n = 183)
  2. b Of the specified diagnosed indications only
  3. c The 6 quality-of-life domain-related questions (fatigue, social activity, mobility, impact on usual activities, discomfort, anxiety/depression) were rated on 0–4-point rating scales (where 0 = not at all, and 4 = very much). Total scores were computed (ranging from 0–24) and then classified into one of three groups: 0–7; 8–16; and 17–24
  4. d Participants asked the likelihood they will live for the next 50 years if aged 18–35, the next 40 years if aged 36–50, the next 25 years if aged 51–65, or the next 10 years if aged ≥ 66