Table 1 Baseline characteristics of patient cohort.

From: Sex-differential testosterone response to long-term weight loss

Parameter (reference range)

Diet

N = 21

LAGB

N = 12

SG

N = 21

RYGB

N = 7

Total

N = 61

P value

All participants

Weight (kg)*

110.9 (26.0)

105.0 (16.5)

125.3 (16.9)

113.1 (15.9)

115 (22.6)

0.04

BMI, kg/m2*.

38.1 (6.6)

37.7 (4.5)

42.5 (5.3)

42.3 (7.7)

40.2 (6.7)

0.06

Age (years)*

53.4 (8.6)

42.2 (13.0)

50.0 (11.7)

50.9 (7.2)

50.9 (11.4)

0.07

Cortisol nmol/L, (200–600)

270 (220, 327)

284 (249, 306)

298(203, 368)

274 (243, 340)

280 (216, 351)

0.65

ACTH pmol/L, (0–12)

4.3 (2.7, 5.9)

4.4 (3.5, 4.62)

5.2 (2.4, 6.7)

4.1 (3.6, 5.4)

4.4 (3.2, 6.2)

0.44

IGF1 nmol/L, (RR 10–30)

13.1 (10.9, 18.0)

17.9 (15.2, 19.7)

12.8 (10.5, 17.6)

14 (13.8, 16.5)

14.9 (11.3, 18.7)

0.41

FT4 pmol/L, (RR 11–22)

14.4 (13.8, 16.5)

15.3 (14.2, 17.4)

15.4 (13.9, 16.5)

15.6 (14.2, 17.6)

15.2 (13.8, 17)

0.82

FT3 pmol/L, (RR 3–6.2)

4.5 (4.3, 4.9)

4.9 (4.5, 5.3)

5 (4.65, 5.3)

4.7 (4.35, 5.1)

4.8 (4.3, 5.3)

0.08

TSH mIU/L, (RR 0.4–4.2)

2.1(1.3, 3.2)

1.36 (1.25, 2.3)

1.5 (1.1, 2.4)

1.7 (1.4, 2.9)

1.6 (1.2, 2.6)

0.01

Females

Sex (Females), N (%)

17 (81%)

10 (83%)

12 (57%)

5 (71%)

44 (72%)

0.11

FSH (IU/L), Postmenopausal Females: (25–140)

19.7 (5.6, 55)

9.2 (5.6, 36.4)

28.8 (4.7, 44.7)

36.2 (34.7, 58.1)

27.4 (5.7, 53.6)

0.90

LH (IU/L), Postmenopausal Females: (7.7–60)

15.2 (6.9, 29.2)

11.5 (5.2, 28.5)

14 (5.7, 28.0)

28 (21.7, 29)

17.3 (5.7, 30.0)

0.92

Oestradiol pmol/L Postmenopausal Females: <100

103 (46, 294)

127 (84.2, 234)

74 (59.5, 91)

72 (49, 76)

87 (54.2, 218)

0.72

SHBG nmol/L, (20–110)

34.3 (21.9, 48.9)

30.0 (24.4, 46.2)

25.6 (19.6, 106)

24.7 (20, 27.1)

29.1 (21.3, 49)

0.39

Testosterone nmol/L, (0.0–1.8)

0.8 (0.6, 1.25)

1.15 (0.6, 1.45)

1.15 (0.75, 1.65)

0.7 (0.5, 0.8)

0.9 (0.6, 1.4)

0.71

Males

Sexr (Males), N (%)

4 (19%)

2 (17%)

9 (43%)

2 (29%)

17 (28%)

 

FSH (IU/L), Males (1.5–13)

6.45 (5.6, 7.4)

4.7 (4.5, 4.95)

3.7 (3.0, 4.5)

4.7 (4.7, 4.7)

4.2 (3.7, 6.3)

0.32

LH (IU/L), Males: (1.7–8.6)

5.4 (4.9, 6.55)

2.65 (2.6, 2.7)

3.7 (2.5, 4.4)

5.6 (5.6, 5.6)

4.0 (2.7, 5.3)

0.12

Oestradiol pmol/L, (0–160)

85 (76.5, 93.5)

126 (125, 128)

93 (78, 132)

162 (162, 162)

113 (80.5, 131)

0.27

SHBG nmol/L, (20–90)

20.1 (17.9, 24)

25.5 (21.2, 29.8)

24.5 (16.6, 30.8)

17 (17, 17)

20.1 (17, 31.6)

0.56

Testosterone nmol/L, (12–36)

13.7 (9.95, 17.2)

18.2 (15.0, 21.5)

11.8 (9.5, 13.7)

11.7 (11.7, 11.7)

11.8 (10.1, 16.4)

0.91

  1. Parameters values are expressed as median (interquartile range-IQR) unless specified, (*) - mean (SD), P value for comparison of surgical procedures with Diet group.
  2. ACTH adrenocorticotropic hormone, BMI body mass index, FSH Follicle-stimulating hormone, IGF1 insulin-like growth factor, LH Luteinizing hormone, SHBG sex hormone-binding globulin, TSH thyroid stimulating hormone, FT4 free thyroxine, FT3 free triiodothyronine, LAGB laparoscopic gastric banding, SG sleeve gastrectomy, RYGB Roux-en-Y gastric bypass.
  3. Bolded values indicate statistical significance for comparison of surgical procedures with Diet group.