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Table 2 Comparison of clinical indices between primary care eating disorder patients and general population

From: A retrospective analysis of biochemical and haematological parameters in patients with eating disorders

Parameter

Unit of measure

Reference interval

Population mean (SD)

Study mean (SD)

Study result range

t score

p-value

Cholesterol

mmol/L

3.9–5.5

4.7 (±0.4)

4.74 (±1.03)

2.7 to 8.5

0.41

0.68

Body mass index

Kg/m2

18.5–24.9

21.75(±1.63)

18.14 (±3.11)

12.7 to 30.4

−11.55

≤0.001

Red cell folatea

nmol/L

776–1784

1280 (±252)

2055 (±584)

627 to 4103

11.73

≤0.001

Vitamin B12

pmol/L

138–652

393 (±126)

502 (±278)

142 to 1480

3.77

≤0.001

Magnesium

mmol/L

0.7–1.1

0.9 (±0.1)

0.84 (±0.08)

0.7 to 1.1

−7.87

≤0.001

Manganese

nmol/L

10.0–45.0

27.5 (±8.75)

8.3 (±3.07)

4.0 to 21.0

−65.39

≤0.001

Zinc

umol/L

9.0–19.0

14.0 (±2.5)

11.31 (±1.88)

6.7 to 18.5

−17.46

≤0.001

Calcium

mmol/L

2.1–2.55

2.33 (±0.11)

2.31 (±0.10)

2.11 to 2.51

2.08

≤0.05

Potassium

mmol/L

3.5–5.5

4.5 (±0.50)

4.14 (±0.50)

2.5 to 5.8

−7.48

≤0.001

Urate

mmol/L

0.15–0.4

0.28 (±0.06)

0.25 (±0.08)

0.13 to 0.48

−3.9

≤0.001

Sodium

mmol/L

135–145

140 (±2.5)

139.13 (±2.91)

130 to 145

−3.1

≤0.01

Albumin

g/L

37.0–48.0

42.5 (±2.75)

45.72 (±3.4)

41.0 to 53.0

9.8

≤0.001

Phosphate

mmol/L

0.8–1.5

1.15(±0.175)

1.26 (±0.18)

0.9 to 1.9

6.47

≤0.001

Ferritin

μg/L

30–150

90 (±21.25)

61.22 (±58.7)

4.0 to 380.0

−5.14

≤0.001

Vitamin D

nmol/L

50–150

100 (±25.0)

78 (±26.23)

21.0 to 189.0

−8.55

≤0.001

White blood cells

109/L

3.5–11.0

7.25 (±1.88)

6.14 (±2.1)

2.3 to 16.6

−5.59

≤0.001

Neutrophils

109/L

1.5–7.5

4.5 (±1.5)

3.53 (±1.43)

1.1 to.8.15

−7.18

≤0.001

Red blood cells

1012/L

3.9–5.6

4.75 (±0.43)

4.25 (±0.38)

3.0 to 4.9

−13.93

≤0.001

Platelets

109/L

150–400

275 (±62.5)

252 (±66.0)

108 to 530

−3.69

≤0.001

  1. aAs indicated in the text, only patients tested on this parameter before a test change was made by the pathology company on 21/01/13 were included in the study
  2. SD = standard deviation