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Table 5 Linear and multivariate analysis of relationship between the induced sputum levels of KL-6 and clinical parameters

From: Ageing and long-term smoking affects KL-6 levels in the lung, induced sputum and plasma

Variable   Regression coefficient Standard error P-value
Linear Regression Age 4.747 2.360 0.049*
  BMI 5.971 5.427 0.276
  Pack-year 2.921 0.942 0.003**
  FEV1/FVC -3.034 1.415 0.037*
Multi Regression Age 1.506 2.713 0.581
  Pack-year 2.566 1.409 0.075
  FEV1/FVC -0.056 1.940 0.977
  1. BMI, body mass index; FEV1, Forced expiratory volume in one second; FVC, Forced vital capacity