Unadjusted Expanded Health Belief Model Sociopsychological Factor Status, Patient and Provider Visit Behaviors, and Colorectal Cancer Screening by Study Group
| Characteristics (N = 1,164) | Intervention Group | |
|---|---|---|
| Control (N = 569) | Tailored IMCP (N = 595) | |
| EHBM sociopsychological factors | ||
| Specific test preference, % | ||
| Previsit | 62.6 | 64.5 |
| Postvisita | 76.3 | 83.2 |
| Screening knowledge score, mean (SD) | ||
| Test options (score range 0–3)b | ||
| Previsit | 1.6 (0.8) | 1.7 (0.8) |
| Postvisitc | 1.9 (0.8) | 2.2 (0.8) |
| Harms/inconveniences (score range 0–6)b,d | ||
| Previsitc | 3.7 (2.1) | 4.3 (2.1) |
| Postvisitc | 4.1 (2.3) | 5.0 (2.4) |
| Total (score range 0–9)b,e | ||
| Previsitc | 5.3 (2.5) | 5.9 (2.5) |
| Postvisitc | 6.0 (2.7) | 7.2 (2.8) |
| Self-efficacy score (score range 1–5), mean (SD)d,f | ||
| Previsitc | 3.8 (0.7) | 4.1 (0.7) |
| Postvisita | 3.9 (0.7) | 4.0 (0.6) |
| Barriers score (score range 1–5), mean (SD)d,g | ||
| FOBT | ||
| Previsit | 3.5 (0.8) | 3.5 (0.8) |
| Postvisit | 3.5 (0.7) | 3.5 (0.8) |
| Colonoscopy | ||
| Previsit | 3.4 (0.7) | 3.5 (0.6) |
| Postvisit | 3.5 (0.7) | 3.5 (0.7) |
| Stage of readiness, %d | ||
| Precontemplation | ||
| Previsit | 11.1 | 4.9 |
| Postvisit | 7.4 | 6.2 |
| Contemplation | ||
| Previsit | 63.0 | 62.0 |
| Postvisit | 59.5 | 54.5 |
| Preparation | ||
| Previsit | 25.9 | 33.0 |
| Postvisit | 33.0 | 39.4 |
| Self-reported prior CRC screening, %d | ||
| FOBT | 26.5 | 26.9 |
| Colonoscopy | 13.2 | 15.9 |
| Patient-reported visit behaviors, % | ||
| CRC screening discussed | 34.8 | 41.2 |
| Clinician recommended CRC screening | 50.2 | 59.0 |
| CRC screening, No. (%)h | 123 (22.1) | 132 (23.0) |
CRC = colorectal cancer; IMCP = interactive multimedia computer program; EHBM = expanded health belief model; FOBT = fecal occult blood testing.
↵a P <.01.
↵b Higher scores indicate greater knowledge.
↵c P <.001 for difference in scores between intervention groups (c2 test for categorical variables, t test for continuous variables).
↵d In the tailored IMCP group, these questions were answered after participants had viewed some information tailored to their knowledge of colorectal cancer screening options (see Methods and Figure 1 for details).
↵e Total knowledge score is sum of scores for knowledge of screening test options and knowledge of screening harms and inconveniences scales.
↵f Higher scores indicate higher self-efficacy.
↵g Higher scores indicate fewer barriers.
↵h During 12 months of follow-up, based on review of medical records, available for 1,132 participants (575 IMCP patients, 557 controls).