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Table 4 Analysis of accepting/refusing colonoscopy for demographic parameters with detailed and collapsed categories (χ 2 – Test) and p-values of likelihood ratio test (LRT) for collapsed parameters including age

From: Improving compliance to colorectal cancer screening using blood and stool based tests in patients refusing screening colonoscopy in Germany

Parameter P value detailed parameters (χ2– Test) P value collapsed* parameters (χ2– Test) Likelihood ratio test – p value
Gender 0.47   0.60
Age Group 0.23   1.00
Ethnicity 0.37 0.51 0.29
Education 0.07 0.76 0.08
Profession/Work 0.60 0.42 0.34
Monthly Income 0.06   0.03
Health Insurance 1.00   0.82
Health Status 0.59 1.00 0.98
Self evaluated risk of CRC 0.01 0.16 0.005
Frequency of regular exercise <0.001 <0.001 0.0004
Diet 0.15   0.09
Alcohol Consumption 0.48 0.87 0.47
Smoking 0.34 1.00 0.40
Number of physician visits in last year 0.19   0.27
Prior experience inflammation or polyps 0.10   0.08
Prior Experience - Cancer (excluding CRC) 0.31   0.31
Any family members with polyps 0.34   0.18
Any family members diagnosed with cancer 0.57   0.76
  1. *For some demographic variables, classes were combined to increase the number of subjects, and were analyzed (compare Table 1 and Additional file 1: Table S1).