Table 2.
Logistic regression of intention to adhere to recommendations for follow-up after an hypothetical abnormal FOBT result (n = 288)
| Bivariate analyses | Multivariate analyses | |||||
| respondents | crude | adjusteda | ||||
| Variables | range or category | % or mean(SD) | OR(95%CI) | p value | OR(95%CI) | p value |
| Intention | high | 74.7 | ||||
| Perceived barriers | ||||||
| Misperception regarding the necessity of follow-up | ||||||
| CDE are not necessary unless symptomatic | 1 – 5 | 1.8(1.2) | 0.70(0.56–0.87) | 0.002 | 0.67(0.53–0.85) | 0.001 |
| CDE are not necessary for my age | 1 – 5 | 1.7(1.1) | 0.64(0.51–0.81) | < 0.001 | 0.60(0.47–0.77) | < 0.001 |
| Discomfort with the CDE procedure | ||||||
| Having CDE would be embarrassing | 1 – 5 | 2.8(1.5) | 0.85(0.70–1.02) | 0.072 | 0.76(0.62–0.94) | 0.010 |
| Bowel preparation for the CDE is too difficult | 1 – 5 | 3.8(1.3) | 1.11(0.90–1.37) | 0.316 | 1.06(0.85–1.33) | 0.589 |
| Having CDE would be uncomfortable | 1 – 5 | 3.6(1.4) | 0.97(0.80–1.18) | 0.763 | 0.91(0.73–1.13) | 0.403 |
| Having CDE would be painful | 1 – 5 | 3.6(1.4) | 0.98(0.81–1.20) | 0.870 | 0.91(0.73–1.13) | 0.410 |
| Psychological costs | ||||||
| I will feel uncomfortable talking about CRC | 1 – 5 | 2.7(1.4) | 0.84(0.69–1.02) | 0.073 | 0.80(0.65–0.99) | 0.037 |
| I am afraid of finding cancer | 1 – 5 | 3.5(1.4) | 0.92(0.76–1.12) | 0.435 | 0.86(0.72–1.09) | 0.250 |
| Practical barriers | ||||||
| I am too busy to undertake follow-up examinations | 1 – 5 | 1.8(1.1) | 0.54(0.42–0.70) | < 0.001 | 0.48(0.36–0.63) | < 0.001 |
| I have other things to do that are more important than undertaking follow-up examinations | 1 – 5 | 1.4(0.9) | 0.59(0.44–0.79) | < 0.001 | 0.56(0.41–0.76) | < 0.001 |
| Having CDE would cost too much money | 1 – 5 | 1.8(1.1) | 0.75(0.59–0.95) | 0.016 | 0.71(0.54–0.92) | 0.009 |
| Perceived benefits | 6 – 30 | 25.0(5.5) | 1.07(1.02–1.12) | 0.008 | 1.06(1.02–1.12) | 0.010 |
| Perceived susceptibility | 3 – 15 | 6.3(2.7) | 1.02(0.92–1.12) | 0.744 | 1.05(0.94–1.17) | 0.377 |
| Perceived severity | 6 – 30 | 19.0(5.9) | 1.04(1.00–1.09) | 0.071 | 1.05(0.99–1.10) | 0.094 |
| Knowledge of CRC risk factorsb | ||||||
| Blood relative with CRC | correct | 77.1 | 2.04(1.10–3.77) | 0.023 | 2.06(1.07–4.12) | 0.030 |
| Low fiber diet | correct | 91.5 | 2.49(1.04–5.96) | 0.041 | 2.72(1.07–6.90) | 0.035 |
| High fat diet | correct | 85.6 | 1.52(0.74–3.14) | 0.258 | 1.33(0.60–2.95) | 0.491 |
| Increasing age | correct | 45.8 | 1.20(0.69–2.07) | 0.515 | 1.22(0.69–2.12) | 0.486 |
| Social supportc | ||||||
| Health care professionals | yes | 55.9 | 1.12(0.65–1.92) | 0.695 | 1.15(0.65–2.05) | 0.633 |
| Family members | yes | 53.1 | 1.04(0.59–1.85) | 0.884 | 0.96(0.53–1.75) | 0.902 |
Note: OR: odds ratio; CI, confidence interval; CDE, complete diagnostic evaluation; CRC, colorectal cancer; FOBT, fecal occult blood test.
a adjusted for age, gender, marital status, education, economic status, trait anxiety, bowel symptoms, family history of CRC, and past FOBT screening. b correct vs. else. c yes vs. not.
For the scales, the OR estimate the change in odds of intention that is associated with a change of one scale point.
The OR described the associated of each psychosocial variable and intention respectively.