Table 2

Percentage of men who reported a perceived risk scale score ≥3 at baseline (cross-sectional analyses) and at year 2 of follow-up (prospective analyses) by personal history of colorectal polyps and psychosocial factors measured at baseline

Independent variablesMen with a history of polyps (n = 612)Men without a history of polyps (n = 1343)
naBaselineYear 2 follow-upnaBaselineYear 2 follow-up
Baseline perceived risk
≥329361.1106542.1
<331922.5b2788.5b
Intention to do CRCSc
≥353553.845.2104523.517.0
<36738.8b20.9b2659.1b8.7b
Belief in salience and coherence of CRCS
≥358453.444.2117322.916.5
<32825.0b10.7b1695.3b7.7b
Belief in efficacy of CRCS
≥359952.942.9129321.115.9
<31315.4b30.8444.6b2.3b
Belief polyp removal prevents CRCS
≥354853.343.3116921.615.7
<36240.3b37.116215.4b13.6
Belief CRC can be cured
≥359252.743.1128021.115.6
<31625.0b37.56011.7b11.7
Perceived self-efficacy related to CRCS
≥345453.743.886123.517.8
<315847.5b39.247915.7b11.3b
Worry or fear of being diagnosed with CRC
≥313265.954.618538.424.9
<346448.5b39.4b112417.4b13.7b
Concern about CRCS discomfort
≥327351.342.166421.514.3
<333552.543.066919.916.6
Social support and influence variables
Receptivity to family member support
≥349154.043.095622.015.8
<310544.8b41.033318.0b14.7
Support for screening from family members
≥353754.943.8106323.616.8
<35026.0b32.0b1998.5b8.5b
  • a Varies from the subgroup totals because of missing values on some of the independent variables.

  • b P < 0.2, chosen to identify possible variables for inclusion in the multivariable model. Test statistics were computed to compare the distribution of each independent variable for those at high and low perceived risk within the specified subgroup. P were based on χ2 tests, adjusted for clustering within worksites using SUDAAN (34) .

  • c CRC, colorectal cancer; CRCS, colorectal cancer screening.