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Table 5 Association between all haematology and biochemistry parameters and explanatory variables age, sex and season

From: Seasonal variation in haematological and biochemical reference values for healthy young children in The Gambia

Parameter

Estimated effect on the median (SE)a value of parameter

 

Cubic spline of ageb

Genderc

Seasond

Total WBC (109/L)

−0.08 (0.006); p < 0.0001

−0.07 (0.15); p = 0.01

0.56 (0.15); p = 0.0002

Lymphocytes (109/L)

−0.06 (0.004); p < 0.0001

−0.05 (0.10); p = 0.65

0.31 (0.10); p = 0.004

Monocytes (109/L)

−0.004 (0.001); p < 0.0001

−0.02 (0.02); p = 0.16

0.06 (0.02); p = 0.0002

Neutrophils (109/L)

−0.004 (0.003); p = 0.13

−0.22 (0.08); p = 0.004

0.26 (0.08); p = 0.0007

Eosinophils (109/L)

0.003 (0.001); p < 0.0001

0.02 (0.02); p = 0.31

−0.02 (0.02); p = 0.24

Haemoglobin (g/dL)

0.041 (0.002); p < 0.0001

−0.053 (0.068); p = 0.44

−0.662 (0.069); p < 0.0001

Platelets (109/L)

−2.75 (0.29); p < 0.0001

−8.34 (7.43); p = 0.26

44.0 (7.41); p < 0.0001

Sodium (mmol/L)

0.03 (0.01); p < 0.0001

−0.24 (0.16); p = 0.13

−0.92 (0.16); p < 0.0001

Potassium (mmol/L)

−0.007 (0.001); p < 0.0001

−0.09 (0.04); p = 0.02

−0.12 (0.04); p = 0.002

Urea (mmol/L)

0.03 (0.002); p < 0.0001

0.12 (0.05); p = 0.02

−0.19 (0.05); p = 0.003

Creatinine (μmol/L)

0.20 (0.01); p < 0.0001

0.77 (0.29); p = 0.01

−10.9 (0.35); p < 0.0001

AST (U/L)

−0.07 (0.02); p = 0.005

0.44 (0.65); p = 0.50

−1.88 (0.65); p = 0.004

ALT (U/L)

0.03 (0.01); p = 0.02

−0.09 (0.37); p = 0.80

5.80 (0.40); p < 0.0001

Albumin g/dL

0.04 (0.01); p < 0.0001

−0.02 (0.26); p = 0.39

−1.93 (0.26); p < 0.0001

  1. a Standard errors of the estimated effect on the median value
  2. b A positive sign of the coefficient indicates that the median value increases with age
  3. c Males are compared to females (reference)
  4. d Wet season is compared to dry season (reference)