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Table 1 Baseline characteristics of the gallstones group versus the no-gallstones group.

From: Association between dietary magnesium intake and gallstones: the mediating role of atherogenic index of plasma

Characteristics

Overall, N = 4,841

Gallstones, N = 413

No gallstones, N= 4,428

P value

Gender, n (%)

   

<0.001

 Male

2,277 (47.04%)

101 (24.46%)

2,176 (49.14%)

 

 Female

2,564 (52.96%)

312 (75.54%)

2,252 (50.86%)

 

Age

44 (32, 58)

52 (39, 64)

43 (31, 57)

<0.001

Race, n (%)

   

<0.001

 Mexican American

632 (13.06%)

59 (14.29%)

573 (12.94%)

 

 Non-Hispanic White

1,664 (34.37%)

174 (42.13%)

1,490 (33.65%)

 

 Non-Hispanic Black

1,255 (25.92%)

81 (19.61%)

1,174 (26.51%)

 

 Other Races

1,290 (26.65%)

99 (23.97%)

1,191 (26.90%)

 

Education level, n (%)

   

0.823

 Grades 0–12

802 (16.57%)

72 (17.43%)

730 (16.49%)

 

 High school graduate/GED

1,172 (24.21%)

102 (24.70%)

1,070 (24.16%)

 

 Some college or above

2,867 (59.22%)

239 (57.87%)

2,628 (59.35%)

 

Marital status, n (%)

   

<0.001

 Married/Living with Partner

2,788 (57.59%)

254 (61.50%)

2,534 (57.23%)

 

 Widowed/Divorced/Separated

903 (18.65%)

95 (23.00%)

808 (18.25%)

 

 Unmarried

1,150 (23.76%)

64 (15.50%)

1,086 (24.53%)

 

PIR, n (%)

   

0.495

 <2

1,944 (40.16%)

161 (38.98%)

1,783 (40.27%)

 

 ≥2

2,305 (47.61%)

207 (50.12%)

2,098 (47.38%)

 

 Unclear

592 (12.23%)

45 (10.90%)

547 (12.35%)

 

Hypertension, n (%)

   

<0.001

 Yes

1,625 (33.57%)

199 (48.18%)

1,426 (32.20%)

 

 No

3,216 (66.43%)

214 (51.82%)

3,002 (67.80%)

 

Diabetes, n (%)

   

<0.001

 Yes

468 (9.67%)

72 (17.43%)

396 (8.94%)

 

 No

4,373 (90.33%)

341 (82.57%)

4,032 (91.06%)

 

Fatty liver, n (%)

   

<0.001

 No

2,962 (61.19%)

200 (48.43%)

2,762 (62.38%)

 

 Mild

699 (14.44%)

74 (17.92%)

625 (14.11%)

 

 Severe

1,180 (24.38%)

139 (33.66%)

1,041 (23.51%)

 

Smoking, n (%)

   

0.062

 Current smokers

952 (19.67%)

77 (18.64%)

875 (19.76%)

 

 Former smokers

958 (19.79%)

100 (24.21%)

858 (19.38%)

 

 Never smokers

2,931 (60.55%)

236 (57.14%)

2,695 (60.86%)

 

Alcohol consumption, n (%)

   

0.003

 Heavy

1,657 (34.23%)

109 (26.39%)

1,548 (34.96%)

 

 Moderate

483 (9.98%)

44 (10.65%)

439 (9.91%)

 

 Mild

843 (17.41%)

72 (17.43%)

771 (17.41%)

 

 Never

1,858 (38.38%)

188 (45.52%)

1,670 (37.71%)

 

BMI (kg/m2)

28 (24, 33)

32 (27, 38)

28 (24, 33)

<0.001

TG (mmol/L)

1.19 (0.84, 1.73)

1.34 (0.95, 1.82)

1.16 (0.84, 1.72)

<0.001

HDL-C (mmol/L)

1.32 (1.11, 1.60)

1.32 (1.11, 1.58)

1.32 (1.09, 1.63)

0.626

TC (mmol/L)

4.76 (4.16, 5.43)

4.76 (4.19, 5.43)

4.76 (4.16, 5.43)

0.689

ALT (U/L)

17 (13, 25)

17 (13, 25)

17 (13, 25)

0.837

AST (U/L)

19 (16, 24)

19 (15, 23)

19 (16, 24)

0.064

GGT(IU/L)

20 (14, 31)

20 (15, 33)

20 (14, 31)

0.255

Protein intake (g)

73 (55, 97)

64 (49, 85)

74 (55, 98)

<0.001

Carbohydrate intake (g)

225 (167, 301)

214 (154, 279)

226 (168, 303)

0.002

Fat intake (g)

77 (55, 107)

71 (53, 99)

78 (55, 107)

0.006

Water intake (g)

2,558 (1,889, 3,408)

2,415 (1,790, 3,313)

2,567 (1,896, 3,414)

0.046

Magnesium intake(mg)

275 (201, 376)

260 (184, 345)

277 (202, 379)

<0.001

Calcium intake(mg)

799 (554, 1,116)

793 (536, 1,052)

801 (555, 1,121)

0.205

Iron intake(mg)

12 (9, 16)

11 (8, 15)

12 (9, 17)

<0.001

Zinc intake(mg)

9.2 (6.7, 12.7)

8.2 (6.1, 11.4)

9.3 (6.7, 12.8)

<0.001

AIP

-0.06 (-0.26, 0.16)

-0.01 (-0.19, 0.20)

-0.06 (-0.27, 0.16)

<0.001

  1. Median (IQR) for continuous variables; N (%) for categorical variables
  2. Abbreviations: PIR Ratio of household income to poverty, GED General equivalency diploma, BMI Body mass index, TG Triglyceride, HDL-C High density lipoprotein cholesterol, TC Total cholesterol, ALT Alanine Aminotransferase, AST Aspartate Aminotransferase, GGT Gamma Glutamyl Transferase; AIP Atherogenic index of plasma