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Table 3 Respondent perception of clinical trials (N = 1,515)

From: Factors associated with willingness to participate in clinical trials: a nationwide survey study

Variable Category Favorable feeling Safety Necessity
   M (SD) t or F p M (SD) t or F p M (SD) t or F p
Gender Male 5.40 (2.34) 1.378 .168 4.70 (1.93) −0.292 .770 7.36 (2.18) 1.677 .094
  Female 5.24 (2.28)    4.72 (1.86)    7.17 (2.12)   
Age (years) 19 ~ 29 5.00 (2.23) 20.752 .004 4.57 (1.90) 5.984 .156 6.77 (2.16)a 26.135 <.001
  30s 5.11 (2.30)    4.64 (1.85)    7.28 (2.30)b   a < b
  40s 5.53 (2.22)    4.90 (1.81)    7.49 (1.99)b   
  50s 5.54 (2.55)    4.74 (1.95)    7.46 (2.20)b   
  ≥60 5.49 (2.24)    4.61 (2.10)    7.26 (1.99)   
Education ≤High School 5.37 (2.30) 6.427 .272 4.73 (1.87) 1.205 .563 7.29 (2.14) 1.113 .624
  ≥ College 5.23 (2.32)    4.67 (1.95)    7.23 (2.18)   
Region Large city 5.44 (2.24) 13.682 .077 4.82 (1.97) 9.319 .075 7.00 (2.20)a 53.033 <.001
  Small city 5.16 (2.42)    4.58 (1.86)    7.46 (2.16)b   a < b
  Rural area 5.37 (2.16)    4.73 (1.70)    7.68 (1.75)b   
Household income <2,000 5.24 (2.41) 8.345 .181 4.69 (1.88) 0.957 .901 7.02 (2.30) 16.105 .007
2,000-2,999 5.43 (2.20)    4.76 (1.85)    7.37 (1.91)   
3,000-3,999 5.14 (2.24)    4.65 (2.00)    7.13 (2.24)   
≥4,000 5.39 (2.41)    4.72 (1.89)    7.44 (2.16)   
Living style Alone 5.39 (2.30) 0.301 .763 4.66 (1.69) −0.234 .815 7.23 (2.07) −0.153 .879
  With family 5.31 (2.31)    4.71 (1.91)    7.27 (2.16)   
Awareness of CT No 4.66 (2.33) −6.469 <.001 4.21 (1.86) −5.910 <.001 6.66 (2.39) −5.901 <.001
Yes 5.54 (2.26)    4.87 (1.89)    7.47 (2.03)   
Experience in CT No 5.51 (2.26) −2.938 .003 4.88 (1.87) 0.436 .663 7.47 (2.02) 0.834 .404
Yes 6.88 (2.17)    4.71 (2.44)    7.13 (2.19)   
  1. a < b in post doc test.