Skip to main content

Table 3 Nutritional deficiencies in each surgery group pre-operation and during follow-up

From: Two-year outcomes of sleeve gastrectomy versus gastric bypass: first report based on Tehran obesity treatment study (TOTS)

Nutritional deficiencies

Surgical technique

Pre operation

Post operation

 
  

12th month

24th month

P-value

Iron deficiency Anemia

SG

326(15.3)

202 (25.1)

41 (27.7)

<.001

GB

199 (18.8)

197 (39.6)

88 (55.0)

<.001

P-value

.014

<.001

<.001

–

Hematocrit, deficiency

SG

159 (7.7)

134(16.7)

28 (18.9)

<.001

GB

101 (10.0)

148 (29.8)

67 (42.1)

<.001

P-value

.034

<.001

<.001

 

Ferritin deficiency

SG

105 (6.9)

91 (15.7)

22 (25.6)

<.001

GB

69 (8.5)

99 (25.0)

56 (45.9)

<.001

P-value

.163

<.001

.003

–

Iron deficiency

SG

164 (8.7)

32 (5.2)

12 (14.5)

.341

GB

87 (9.2)

48 (12.2)

19 (17.8)

.004

P-value

.631

<.001

.542

–

Copper deficiency

SG

65 (3.7)

26 (5.8)

8 (8.5)

.002

GB

41 (4.7)

22 (8.5)

11 (13.9)

<.001

P-value

.211

.178

.257

–

Zinc deficiency

SG

32 (1.6)

9 (1.3)

0 (0.0)

.010

GB

25 (2.5)

16 (3.5)

10 (5.0)

.054

P-value

.097

.011

<.001

–

Calcium deficiency

SG

32 (1.6%

4 (0.6%)

2 (1.8)

.246

GB

23 (2.2)

16 (3.7%)

5 (4.2)

.121

P-value

.173

<.001

.449

–

Phosphate deficiency

SG

32 (1.6)

2 (0.3)

0

.012

GB

7 (0.7)

1 (0.2)

0

.187

P-value

.040

>.999

–

–

Vitamin B12 deficiency

SG

251 (12.8)

78 (10.2)

8 (3.2

<.001

GB

149 (14.9)

39 (8.3)

15 (7.6)

<.001

P-value

.106

.265

.037

–

25 (OH) vitamin D deficiency

SG

997 (50.6)

140 (19.3)

27 (22.5)

<.001

GB

484 (49.9)

83 (19.2)

23 (17.7)

<.001

P-value

.726

.982

.342

–

Hypo albuminemia, < 2.5 g/dL

SG

0 (0.0)

0 (0.0)

0 (0.0)

–

GB

0 (0.0)

11 (1.5)

3 (1.0)

0.003

P-value

–

< 0.001

0.060

–

  1. SG sleeve gastrectomy, GB gastric bypass
  2. Data are presented as n (%)