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Table 2 Variable assignment

From: A multi-center nested case-control study on hospitalization costs and length of stay due to healthcare-associated infection

Variable Value
Area (classified by GDP)
 Chengdu 1
 Mianyang, Deyang, Yibin, Nanchong, Luzhou, Dazhou, Leshan, Liangshan 2
 Panzhihua, Suining, Meishan, Guang’ an, Neijiang, Zigong 3
 Ziyang, Guangyuan, Ya’ an,Bazhong, Aba, Ganzi 4
Number of hospital beds
  < 300 1
 300 ≤ and < 500 2
 500 ≤ and < 800 3
  ≥ 800 4