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Table 6 Ordinary least squares regression analysis comparing blood results between exposed and unexposed, controlling for age.

From: Cluster of systemic lupus erythematosus (SLE) associated with an oil field waste site: a cross sectional study

Adults Exposed Unexposed Comparison Estimates
  Number Mean (SD) Number Mean (SD) Parameter Estimate P-value
% CD 19 (B-cell) 43 18.07(6.11) 47 14.02(4.68) 3.98 0.0006
% Natural Killer Cells1 43 10.77(5.65) 47 14.26(7.33) -3.41 0.01
Total bilirubin 87 0.61(0.23) 37 0.54(0.16) 0.07 0.12
gamma-Glutamyl transferase (IU/L) 87 40.07(50.25) 37 19.30(11.53) 21.60 0.01
Globulin (mg%) 87 3.02(0.50) 37 2.86(0.34) 0.15 0.09
Serum CALCIUM (mg%) 87 9.71(0.38) 37 9.23(0.36) 0.48 <0.0001
Creatinine Phosphokinase (IU/L) 87 127.44(90.63) 37 110.43(54.02) 16.02 0.32
  1. 1. Natural Killer Cells = CD16 + 56+/CD45+
  2. SD = Standard Deviation