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Table 3 Summary statistics for serum parameters in evaluable subjects (N = 52a)

From: Observational study of the effects of upper respiratory tract infection on hydration status

Serum Parameter Visit 1 (With URTI) Visit 2 (After Recovery)
Osmolality, mosm/kg, n 47 47
 Mean (SD) 287.63 (4.83) 288.60 (5.99)
 Median (range) 287.00 (278.0–307.0) 288.00 (278.0–319.0)
Complete blood count, n 48 48
Hemoglobin, g/L
 Mean (SD) 140.71 (12.53) 140.52 (14.07)
 Median (range) 140.50 (118.0–167.0) 140.50 (111.0–176.0)
RBC count, ×  1012/L
 Mean (SD) 4.78 (0.43) 4.78 (0.47)
 Median (range) 4.84 (4.0–5.7) 4.77 (3.9–5.9)
Hematocrit, volume fraction
 Mean (SD) 0.43 (0.035) 0.43 (0.040)
 Median (range) 0.43 (0.4–0.5) 0.43 (0.3–0.5)
Mean cell volume, fL/RBC
 Mean (SD) 89.98 (4.30) 89.97 (4.089)
 Median (range) 90.60 (79.1–98.5) 90.65 (77.8–97.5)
Mean cell hemoglobin, pg/RBC
 Mean (SD) 29.45 (1.64) 29.41 (1.44)
 Median (range) 29.75 (25.0–32.7) 29.60 (25.2–32.1)
Mean cell hemoglobin concentration, g/L
 Mean (SD) 327.29 (9.66) 326.92 (7.85)
 Median (range) 325.50 (311.0–359.0) 326.00 (311.0–343.0)
White blood cell count, ×  109/L
 Mean (SD) 6.34 (1.81) 5.82 (1.33)
 Median (range) 5.90 (2.9–10.5) 5.50 (3.3–10.9)
Platelet count, ×  109/L
 Mean (SD) 268.35 (57.43) 283.58 (63.89)
 Median (range) 265.00 (160.0–428.0) 276.50 (170.0–466.0)
Serum urea, mmol/L, n 48 48
 Mean (SD) 4.06 (0.908) 4.21 (1.097)
 Median (range) 4.05 (2.0–6.1) 4.15 (2.0–8.1)
Serum electrolytes, n 48b 48b
 Sodium, mmol/L
  Mean (SD) 140.40 (1.75) 140.70 (2.31)
  Median (range) 140.60 (135.1–145.1) 140.65 (136.3–145.7)
 Potassium, mmol/L
  Mean (SD) 4.22 (0.27) 4.19 (0.33)
  Median (range) 4.20 (3.4–5.2) 4.21 (3.5–4.9)
 Bicarbonate, mmol/L
  Mean (SD) 24.06 (2.26) 23.95 (2.31)
  Median (range) 24.25 (18.5–29.5) 24.25 (18.4–29.6)
 Chloride, mmol/L
  Mean (SD) 102.17 (2.36) 102.57 (2.59)
  Median (range) 102.35 (94.6–107.2) 103.20 (95.4–107.4)
  1. aAnalyses included only subjects with assessments at both visits
  2. bn = 47 for potassium
  3. RBC red blood cell, SD standard deviation, URTI upper respiratory tract infection