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Table 2 Crude odds ratios before and after removal of records with missing data: scenario 2 analyses

From: Generating social network data using partially described networks: an example informing avian influenza control in the British poultry industry

  Full data (n = 662 farms) Following the removal of records (n = 348 farms)  
Farm-level predictors ORa s.e. ORb p-value ORa s.e. ORb p-value % change
L vs. S bird countd 7.304 1.485 <0.0001 5.588 1.369 <0.0001 23.5
L vs. S house countd 1.783 1.289 0.023 1.879 1.310 0.019 5.1
Indoors 2.888 1.425 0.003 3.822 1.472 0.001 24.4
Free-range 0.280 1.529 0.003 0.227 1.579 0.001 18.9
Housing other 0.363 1.648 0.043 0.338 1.656 0.031 6.9
Partial housing 0.890 1.991 0.866 0.592 2.254 0.518 33.5c
Integrated 0.544 1.232 0.003 0.554 1.319 0.033 1.8
East 0.446 1.401 0.017 0.426 1.538 0.047 4.5
Scotland 0.061 2.837 0.007 0.090 2.914 0.024 32.2c
Wales 0.090 1.722 <0.0001 0.116 2.176 0.006 22.4
West 0.047 1.477 <0.0001 0.056 1.583 <0.0001 16.1
  1. aOR = odds ratio; bs.e. = standard error of the odds ratio; c >25% change in odds ratio but direction of association and significance is comparable; dL = large, S = small.