Skip to main content

Table 3 Multivariate models of the odds of consenting to therapy

From: Length of time periods in treatment effect descriptions and willingness to initiate preventive therapy: a randomised survey experiment

  Crude
OR 95% CI
Model 1
OR 95% CI
Model 2
OR 95% CI
Model 3
OR 95% CI
Delay of Events (DoE) Length of time delay     
1 month (ref. cat.) 1 1 1 1
6 month 2.88** (2.11 to 3.95) 3.01** (2.17 to 4.16) 4.45** (2.72 to 7.30) 5.51** (2.47 to 12.30)
18 month 4.94** (3.50 to 6.97) 5.15** (3.62 to 7.33) 6.08** (3.61 to 10.23) 5.69** (2.44 to 13.27)
Demographic Gender     
Male (ref. cat.) 1 1 1 1
Female 1.11 (0.85 to 1.43) 1.02 (0.77 to 1.35) 0.87 (0.56 to 1.33) 0.87 (0.57 to 1.32)
Age group     
under 60 years of age (ref. cat.) 1 1 1 1
60 years of age or older 1.80** (1.35 to 1.28) 1.64** (1.12 to 2.20) 1.34 (0.87 to 2.07) 1.45 (0.76 to 2.70)
Education level     
University (ref. cat.) 1 1 1 1
Secondary school or equal 1.43* (1.06 to 1.93) 1.54** (1.12 to 2.12) 1.13 (0.70 to 1.83) 1.12 (0.69 to 1.81)
Compulsory school 2.28** (1.62 to 3.20) 2.19** (1.51 to 3.17) 1.87* (1.11 to 3.16) 1.89* (1.12 to 3.19)
History of cardiovascular diseases History of heart attack or angina     
No (ref. cat.) 1   1 1
Had heart attack and/or angina 3.47** (1.62 to 7.41)   2.89* (1.13 to 7.41) 2.86* (1.11 to 7.36)
Necessity concerns frameworka Beliefs about medicine     
Necessity 1.06** (1.03 to 1.10)   1.07** (1.03 to 1.11) 1.07** (1.03 to 1.11)
Concern 1.03 (0.99 to 1.07)   1.00 (0.95 to 1.05) 1.00 (0.95 to 1.05)
Interaction effectb DoE 6 month × 60 years of age or older 0.98 (0.52 to 1.87)    0.71 (0.26 to 1.92)
DoE 18 month × 60 years of age or older 1.18 (0.58 to 2.39)    1.11 (0.38 to 3.22)
  1. Odds ratio (OR), significance level and confidence interval (CI) for willing to initiate therapy (0 = “no”, 1 = “yes”)
  2. aNecessity and concern was used in index form, ranging from 0 to 20
  3. bInteraction effects was adjusted for variables included in the interaction term
  4. * P ≤ 0.05, ** P ≤ 0.01 Model 1 = Length of time delay+demographics, Model 2 = Model 1 + History of cardiovascular diseases+Necessity concerns framework, Model 3 = Model 2+ interaction effect