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Table 1 Baseline characteristics across categories of magnesium intake in adults of the Health Worker Cohort Study

From: Dietary magnesium intake and risk of hypertension in a Mexican adult population: a cohort study

Characteristics Magnesium intake Pvaluea
  T1 (n = 459) T2 (n = 459) T3 (n = 460)  
Age (years)b 40.7 (15.1) 41.7 (14.7) 41.9 (15.2) 0.451
Sex (% women) 76.0 76.5 73.2 0.473
Body mass index (kg/m2)b 25.4 (4.1) 25.5 (4.4) 25.5 (4.4) 0.583
Waist circumference (cm)b 87.7 (11.1) 88.1 (12.7) 88.2 (12.6) 0.433
Systolic blood pressure (mmHg)
<110c 35.7 32.9 35.8 0.748
110–119c 35.5 34.4 33.0
120–129c 18.8 22.7 22.2
130–139c 10.0 10.0 9.0
Diastolic blood pressure (mmHg)
<65c 31.6 27.1 28.3 0.477
65–74c 39.7 44.4 39.6
75–84c 26.7 25.9 30.0
85–89c 2.0 2.6 2.1
Current smokerc 16.2 16.2 14.7 0.818
Alcohol consumption (mg/day)b 3.9 (1.3) 4.2 (1.3) 4.1 (1.3) 0.103
Physical activity (METs/week)b 146.1 (66.1) 145.6 (58.9) 145.6 (62.1) 0.602
Postmenopausal hormones (current user)c 29.9 23.9 23.0 0.285
Multivitamin use (current user)c 37.0 37.7 34.2 0.505
History of hyperlipidemiac 15.0 13.5 15.8 0.583
Diabetes mellitusc 6.0 4.5 4.0 0.358
Total caloric intake (kcal/day)b 2,143 (148) 2,135 (144) 2,138 (147) 0.675
Glycemic loadb 201 (16.2) 303 (10.1) 464 (11.0) <0.001
Total fat intake (g/day)b 74.0 (32.6) 52.1 (21.6) 46.9 (21.4) <0.001
Total protein intake (g/day)b 95.2 (38.8) 69.4 (25.5) 63.4 (22.9) <0.001
Total cholesterol (mg/day) 297.7 (93.2) 219.5 (63.7) 201.1 (64.6) <0.001
Sodium intake (mg/day)b 2497 (850) 1783 (581) 1615 (589) <0.001
Fiber intake (g/day)b 14.4 (6.1) 16.6 (6.3) 19.2 (6.8) <0.001
Magnesium intake (mg/day)d 336.2 (223.2–381.1) 359.3 (266.9–419.3) 420.6 (322.4–522.2) <0.001
  1. All variables have been analyzed after adjustment for age (5-year categories) and sex. All covariate values are listed according to the tertile of total magnesium intake.
  2. aANOVA test was used for quantitative variables; χ2 test was used for qualitative variables.
  3. bValues are presented as means and SD (in parentheses).
  4. cValues are presented as proportions.
  5. dValues are presented as means and interquartile range (in parentheses).