Table 2.
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.
P <.01.
Higher scores indicate greater knowledge.
P <.001 for difference in scores between intervention groups (c2 test for categorical variables, t test for continuous variables).
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).
Total knowledge score is sum of scores for knowledge of screening test options and knowledge of screening harms and inconveniences scales.
Higher scores indicate higher self-efficacy.
Higher scores indicate fewer barriers.
During 12 months of follow-up, based on review of medical records, available for 1,132 participants (575 IMCP patients, 557 controls).