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Table 2 Outcomes at baseline and follow-up and regression coefficients (b) for regression analyses

From: Using web-based familial risk information for diabetes prevention: a randomized controlled trial

  With family history   Without family history  
Control Intervention Control Intervention
n=286* n=288*   n=269* n=266*  
Baseline Follow-up Baseline Follow-up b(95%CI) Baseline Follow-up Baseline Follow-up b(95%CI)
Illness and risk perceptions           
Causal beliefs (1–5)           
heredity 4.0 (0.9) 4.0 (0.7) 4.1 (0.8) 4.1 (0.8) 0.05 (−0.08 to 0.17) 3.8 (0.9) 3.9 (0.8) 3.8 (1.0) 4.0 (0.8) 0.19 (0.06 to 0.33)
predisposition 3.7 (0.8) 3.9 (0.7) 3.7 (0.8) 3.9 (0.8) 0.01 (−0.13 to 0.11) 3.6 (0.8) 3.7 (0.8) 3.6 (0.8) 4.0 (0.7) 0.31 (0.19 to 0.43)
physical activity 3.7 (0.9) 4.1 (0.7) 3.7 (0.9) 4.1 (0.7) 0.00 (−0.11 to 0.11) 3.6 (0.9) 4.0 (0.8) 3.6 (0.9) 4.1 (0.6) 0.04 (−0.07 to 0.16)
healthy diet 3.9 (0.8) 4.1 (0.7) 3.8 (0.8) 4.1 (0.8) −0.02 (−0.13 to 0.10) 3.9 (0.8) 4.1 (0.7) 3.8 (0.9) 4.1 (0.6) 0.05 (−0.06 to 0.16)
overweight 4.2 (0.7) 4.2 (0.6) 4.2 (0.7) 4.2 (0.7) −0.04 (−0.14 to 0.06) 4.2 (0.6) 4.2 (0.7) 4.1 (0.7) 4.2 (0.6) 0.02 (−0.08 to 0.13)
Personal control (1–5) 3.8 (0.6) 3.9 (0.6) 3.9 (0.5) 3.9 (0.5) 0.01 (−0.07 to 0.09) 3.8 (0.6) 4.0 (0.5) 3.8 (0.6) 3.9 (0.5) −0.01 (−0.09 to 0.07)
Perceived risk (1–7) 4.5 (1.1) 4.7 (1.2) 4.5 (1.1) 4.8 (1.1) 0.12 (−0.03 to 0.27) 4.0 (1.1) 4.1 (1.2) 3.9 (1.1) 3.9 (1.2) −0.12 (−0.29 to 0.04)
Diabetes risk worry (1–7) 3.5 (1.4) 3.9 (1.4) 3.6 (1.3) 3.8 (1.4) −0.21 (−0.40 to −0.03) 3.3 (1.4) 3.6 (1.4) 3.1 (1.4) 3.4 (1.5) −0.08 (−0.28 to 0.13)
Behavioural outcomes           
Sum score Fat list (0–80) 15.7 (5.2) 15.0 (5.3) 15.1 (5.3) 14.2 (5.5) −0.29 (−0.85 to 0.27) 15.8 (5.0) 15.3 (5.1) 15.5 (5.2) 14.6 (4.9) −0.49 (−1.00 to 0.05)
IPAQ categories§           
vigorous 57.7 58.4 51.0 56.3 0.03 (−0.08 to 0.13) 56.5 52.0 56.1 50,7 0.06 (−0.05 to 0.18)
medium 25.2 26.9 29.9 23.6   24.5 26.8 28.4 27,3  
low 10.5 10.1 13.5 14.2   13.8 15.6 11.2 11,9  
Days/wk physical active 4.3 (2.4) 4.1 (2.4) 4.2 (2.4) 4.2 (2.4) 0.20 (−0.15 to 0.54) 4.2 (2.4) 4.1 (2.5) 4.2 (2.4) 4.2 (2.4) 0.12 (−0.25 to 0.49)
Attitudes towards           
diabetes testing (1–7) 5.3 (1.3) 5.2 (1.3) 5.3 (1.3) 5.2 (1.3) −0.07 (−0.23 to 0.09) 4.9 (1.4) 4.9 (1.4) 4.8 (1.4) 4.9 (1.3) −0.03 (−0.20 to 0.13)
  1. Data are means ± SD or percentages.
  2. *The numbers are based on the availability of the detailed questionnaire to assess family history.
  3. Follow-up for illness and risk perception is directly post-test. For behavioural outcomes after three months.
  4. The interpretation of the regression coefficient (b) for e.g. the illness perception diabetes risk worry (−0.21) would be that an individual in the intervention group will score 0.21 less on the perception of worries about their diabetes risk compared to an individual in the control group, when baseline values for diabetes risk would be similar.
  5. §About 6% of the participants is missing due to data cleaning according the IPAQ data processing guidelines.