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Table 3 Factors Associated with Colon Cancer Screening by Logistic Regression

From: Predictors of colorectal cancer screening in diverse primary care practices

Characteristic Annual FOBTa FOBT ever Sigmoidoscopy, Colonoscopy or Barium Enema ever
Age (ref . = 64–74 years)    
   75 + years .99 (.59 – 1.71) .71 (.53 – .95)* .66 (.46 – .95)*
Gender (ref. = Male)    
   Female .23 (.12 – .44)* .74 (.53 – 1.02) .74 (.49 – 1.11)
Marital status (ref. = Married)    
   Never married 1.80 (.64 – 5.07) .84 (.43 – 1.63) 1.13 (.54 – 2.36)
   Widowed .84 (.42 – 1.68) .98 (.71 – 1.37) .59 (.38 – .92)*
   Divorced/separated .99 (.33 – 3.01) 1.02 (.57 – 1.80) .69 (.33 – 1.44)
Employed (ref. = unemployed) NSc 1.48 (1.00 – 2.20)* NId
Stratum (ref. = Inner city)    
   Rural N/Ab .70 (.41 – 1.18) 1.03 (.5 – 2.1)
   Urban   1.18 (.75 – 1.87) 1.51 (.83 – 2.76)
   Veterans' Affairs   2.45 (1.45 – 4.13)* 1.28 (.68 – 2.44)
Clinician visits/year (ref. <2)    
   2 – <3 1.25 (0.57 – 2.73) 1.17 (0.82 – 1.66) 1.10 (0.69 – 1.74)
   3 – <5 2.78 (1.41 – 5.51)* 1.81 (1.23 – 2.60)* 1.83 (1.18 – 2.82)*
   ≥5 3.35 (1.52 – 7.42)* 1.24 (.77 – 1.98) 2.01 (1.14 – 3.55)*
Annual influenza vaccine 2.55 (1.45 – 4.47)* 1.25 (.85 – 1.84) 1.12 (.72 – 1.74)
Pneumococcal vaccine 1.01 (.56 – 1.82) 1.55 (1.16 – 2.08)* 1.23 (.85 – 1.77)
Tetanus toxoid 1.37 (.81 – 2.33) 1.46 (1.07 – 2.00)* NSc
  1. *P < .05
  2. aFOBT = fecal occult blood test
  3. bN/A = Not included in logistic regression because of small cell sizes
  4. cNS = Not significant in bivariate analyses; not included in logistic regression
  5. dNI = Not included in logistic regression because income was correlated with education |r| = 0.44; P < .001