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Table 2 Multivariate Analysis of Factors Associated with Laparoscopic Colectomy

From: Laparoscopic versus open colectomy for colon cancer in an older population: a cohort study

Variable Estimate OR 95% CI P value*
Year of diagnosis relative to 1996 0.0891 1.093 (1.039, 1.150) 0.001
Stage     
   Regional (relative to localized) -0.1583 0.854 (0.696, 1.047) 0.01°
   Distant (relative to localized) -0.4730 0.623 (0.448, 0.866)  
Left-sided tumor -0.3260 0.722 (0.584, 0.892) 0.003
California residence 0.6293 1.876 (1.499, 2.349) < 0.0001
Large metropolitan area 0.4975 1.645 (1.308, 2.068) < 0.001
Education levela -0.0221 0.978 (0.967, 0.990) 0.0002
NCI cancer center designation 0.8637 2.372 (1.555, 3.619) < 0.001
  1. aMean % of individuals with high school only education in the census tract