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Table 1 Characteristics of study participants1

From: Do dietary intakes influence the rate of decline in anti-Mullerian hormone among eumenorrheic women? A population-based prospective investigation

CharacteristicsTotalAnnual decline in AMHP-value2
Lowest tertileMiddle tertileHighest tertile
Number227767675
Follow-up time (years)16.3 ± 1.0216.9 ± 1.1716.4 ± 0.8415.6 ± 0.48
Baseline demographic
 Age (years)37.2 ± 6.3335.2 ± 6.5838.3 ± 6.1738.2 ± 5.820.003
 Housewife (n(%))183 (80.6)61 (80.3)64 (84.2)58 (77.3)0.562
 Education > 12 years (n(%))3132 (58.1)44 (59.5)49 (65.3)39 (53.4)0.337
 Never smokers (n(%))219 (96.5)75 (98.7)72 (95.0)72 (96.0)0.546
Anthropometric
 Baseline BMI (kg/m2)426.9 ± 4.326.3 ± 4.3727.1 ± 3.9927.3 ± 4.590.319
Baseline BMI categories4
  < 25 (n(%))74 (32.6)29 (38.2)18 (24)27 (36.5)0.226
 25–29.9 (n(%))104 (45.8)34 (44.7)41 (54.7)29 (39.2) 
  ≥ 30 (n(%))47 (20.7)13 (17.1)16 (21.3)18 (24.3) 
 BMI change during follow-up (kg/m2)52.77 ± 3.722.52 ± 3.102.59 ± 3.433.19 ± 4.490.511
Reproductive
 Age at menarche (years)613.5 ± 1.3713.4 ± 1.5113.4 ± 1.2613.7 ± 1.340.447
 Baseline AMH (ng/ml)0.55 (0.22, 1.54)0.41 (0.12, 1.60)0.50 (0.16, 0.91)0.72 (0.35, 1.95)0.004
 Annual decline in AMH7 (%)5.68 (4.93, 6.04)4.42 (3.33, 4.96)5.68 (5.52, 5.84)6.16 (6.04, 6.36)< 0.001
Dietary intakes
 Energy (kcal/day)2274 ± 6882328 ± 6762225 ± 6542268 ± 7370.653
 Carbohydrate (% of energy)58.1 ± 5.9457.6 ± 5.1658.3 ± 6.7758.3 ± 5.840.691
 Fat (% of energy)30.9 ± 5.2631.1 ± 4.7831.1 ± 5.3530.4 ± 5.660.676
 Protein (% of energy)13.5 ± 2.1613.6 ± 1.9913.5 ± 2.2113.5 ± 2.300.922
  1. 1Data are presented as mean ± standard deviation (SD), median (quartile 1, quartile 4), and Number (%). 2Based on ANOVA test for normally distributed variables and Kruskal-Wallis test for non-normally distributed variables. 3Available for n = 222. 4Available for n = 225. 5Available for n = 204. 6Available for n = 226. 7Calculated by the unit change from baseline to the 5th follow-up examination cycle divided by the baseline value