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Table 3 Admission laboratory values between AN subtypes (N = 281)a

From: Extreme anorexia nervosa: medical findings, outcomes, and inferences from a retrospective cohort

  AN-R AN-BP t-testb p value
Laboratory Values (reference range) Meanc SDc Meanc SDc   
Sodium (135–143 mmol/L) 137.6 4.5 135 6.4 −4.01 <.0001
Potassium (3.6–5.1 mmol/L) 3.8 0.4 3.4 0.7 −6.39 <.0001
Carbon Dioxide (18–27 mmol/L) 27.7 3.3 29.3 7.3 2.57 0.01
Glucose (3.3–11.0 mmol/L) 4.57 3.91–5.89 5.26 4.29–6.0 16,507 0.009
Calcium (2.02–2.6 mmol/L) 2.1 0.1 2.2 0.2 5.11 <.001
Phosphorus (0.87–1.58 mmol/L) 1.03 0.2 1.1 0.4 1.69 0.09
Magnesium (0.65–1.1 mmol/L) 0.95 0.1 0.98 0.2 1.60 0.11
BUN (0.21–0.79 mmol/L) 0.57 0.36–0.86 0.50 0.32–0.75 13,987 0.07
Creatinine (44.2–122.9 μmol/L) 59.3 19.1 73.9 28.6 4.65 <.0001
AST (10–40 U/L) 49 26–113 27 21–42 11,730 <.0001
ALT (7–45 U/L) 73 37–194 32 24–50 10,671 <.0001
Total bilirubin (17.1–20.5 μmol/L) 8.6 6.8–12.0 6.8 5.1–15.4 14,294 0.16
Albumin (30–53 g/L) 38.5 4.9 37.9 5.9 −0.85 0.39
Alkaline phosphatase (35–137 U/L) 67 51–97 68 54–95 15,213 0.68
Total protein (60–82 g/L) 67.0 7.5 68.7 9.1 1.78 0.08
WBC (4.5–10.0 109 L−1) 3.8 1.6 5.5 3.3 5.91 <.0001
Neutrophils (%) (48.0–69.0%) 56.9 12.6 57.4 14.5 0.27 0.79
Lymphocytes (%) (21.0–43.0%) 34.4 12.4 33.3 13.5 −0.71 0.48
Platelet count (150–400 109 L−1) 192 142–250 271 201–387 19,308 <.0001
Hematocrit (%) (37.0–47.0%) 36.6 5.8 37.6 5.6 1.4 0.16
MCV (80–100 fL) 94.6 6.7 91.1 6.7 −4.27 <.0001
TSH (0.34–6.0 mU/L) 2 1.2–3.1 1.4 1–2.2 11,935 <.001
INR (0.83–1.19) 1.2 0.2 1.1 0.2 −3.49 <.001
1,25 Hydroxy vitamin D (74.9–199.7 nmol/L) 97.3 77.4–128.5 97.3 64.9–132.3 13,641 0.19
Testosterone (5.6–25.2 nmol/L) 5.9 2.1–11.7 5.9 4.4–14.6 74.0 0.39
Free T3 (4.0–7.4 pmol/L)d 3.1 2.0–3.7 2.3    
Free T4 (6.4–24.5 nmol/L) 11.1 9.1–12.9 13.1 11.8–16.3 632.0 0.01
Prealbumin (0.2–0.52 g/L) 0.18 0.06 0.21 0.07 3.61 <.001
  1. AN-R Anorexia nervosa restricting subtype, AN-BP Anorexia nervosa binge-purge subtype, BUN Blood urea nitrogen, AST Aspartate aminotransferase test, ALT Alanine aminotransferase test, WBC White blood cell, MCV Mean corpuscular volume, TSH Thyroid stimulating hormone, INR International normalized ratio, Free T3 Triiodothyronine, Free T4 Thyroxine
  2. aMagnesium and TSH were available on 274 admissions. Neutrophils, lymphocytes, and 1,25 Hydroxy Vitamin D were available on 275 admissions. INR was available on 280 admissions. Testosterone was available on 19 admissions. Free T3 was available on 7 admissions. Free T4 was available on 55 admissions. Prealbumin was available on 277 admissions
  3. bMann-Whitney U test
  4. c Median (IQR) for not normally distributed variables
  5. dThere were too few values for an analysis between AN subtypes and Free T3 (n = 7)