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Table 3 Zinc serum level and zinc deficiency during the pre- and postoperative period and in different groups of BMI, sex, and underlying diseases

From: The prevalence of zinc deficiency in morbidly obese patients before and after different types of bariatric surgery

 

Zinc serum level (μg/dl), mean (SD)

P-value

Zinc deficiency, n (%)

P-value

Preoperative

89.96 (21.04) a

< 0.001

42 (10.2)

At 3 months

89.99 (26.35) b

 

67 (16.2)

 

At 6 months

79.16 (18.39) a b

 

119 (28.8)

 

At 12 months

80.07 (17.92) a b

 

112 (27.1)

 

Group variables

BMI

 

0.044

 

0.372

 35 ≤ BMI < 40 (n = 44)

95.79 (33.92)

 

4 (9.1)

 

 40 ≤ BMI ≤ 50 (n = 277)

87.97 (18.06)a

 

32 (11.6)

 

 BMI > 50 (n = 92)

93.16 (20.77)a

 

6 (6.5)

 

Sex

 

0.038

 

0.029

 Female (n = 344)

89.43 (21.99)

 

40 (11.6)

 

 Male (n = 69)

92.58 (15.28)

 

2 (2.9)

 

HTN

 

0.210

 

0.689

 Yes (n = 79)

87.37 (18.11)

 

9 (11.4)

 

 No (n = 334)

90.57 (21.65)

 

33 (9.9)

 

Impaired FBS

 

0.227

 

0.027

 Yes (n = 76)

87.70 (22.12)

 

13 (17.1)

 

 No (n = 337)

90.47 (20.78)

 

29 (8.6)

 

DM Type II

 

0.503

 

0.047

 Yes (n = 76)

92.25 (26.10)

 

3 (3.9)

 

 No (n = 337)

89.44 (19.73)

 

39 (11.6)

 

Hyperlipidemia

 

0.584

 

0.308

 Yes (n = 188)

90.78 (22.50)

 

16 (8.5)

 

 No (n = 225)

89.27 (19.75)

 

26 (11.6)

 

Hypothyroidism

 

0.861

 

0.376

 Yes (n = 91)

90.42 (20.95)

 

7 (7.7)

 

 No (n = 322)

89.83 (21.09)

 

35 (10.9)

 
  1. Abbreviations: BMI Body mass index, HTN Hypertension, FBS Fasting blood sugar, DM Diabetes mellitus, SD Standard deviation
  2. a, and b indicate differences between groups