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Table 2 Indicators for healthcare utilization

From: Cost of illness and economic burden of chronic lymphocytic leukemia

  CLL group Control group Attributable to CLL    
  Mean STD Mean STD Lower limit (2.5%) Mean Upper limit (97.5%) p-Value
Sick leave days (paid and unpaid days) 7.6 (35.5) 3.1 (19.6) 3.6 4.4 5.2 <.001 (Logit)
<.001 (NB)a
Physician contacts 14.7 (7.5) 9.4 (6.6) 5.1 5.3 5.4 <.001b
Inpatient stays 0.95 (2.10) 0.36 (0.96) 0.54 0.59 0.63 0.007b
Average length of stay (if hospitalized) 9.4   8.8    0.5   
Prescriptions 18.2 (19.3) 12.8 (14.4) 5.0 5.4 5.9 <.001a
Average prescription cost 148.2   44.5    103.8   
  1. CLL chronic lymphocytic leukemia, STD Standard deviation.
  2. a) Zero-inflated negative binomial specified model; b) Negative binominal specified model.