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Table 1 General characteristics of participants between groups and across tertiles of Dietary Phytochemical Index

From: Association between dietary phytochemical index and risk of benign prostatic hyperplasia: a case-control study

variables†

Mean ± SD or N (%)

Cases (n = 112)

Mean ± SD or N (%)

Controls (n = 112)

P-value

Tertiles of DPI ( mean ± SD in all participants)

P-valuea

T1

≤ 19

T2

19 < DPI < 28

T3

≥ 28

Age(year)

57.17 ± 8.04

58.2 ± 6.69

0.32

56.65 ± 7.32

58.08 ± 7.37

57.98 ± 7.58

0.62

Weight(kg) ††

72.8 ± 15.36

73.28 ± 11.97

0.8

74.38 ± 13.03

74.1 ± 13.93

70.6 ± 14.21

0.21

BMI(kg/m2)

25.56 ± 5

24.94 ± 3.69

0.32

25.69 ± 4.24

25.19 ± 4.31

24.89 ± 4.69

0.56

WC(cm) ††

95.6 ± 5.41

95 ± 4.26

0.32

95.92 ± 4.62

95 ± 5.01

95.34 ± 5.01

0.48

PSA (ng/mL)

6.17 ± 0.96

3.74 ± 0.67

< 0.001

5.51 ± 1.47

4.63 ± 1.35

4.81 ± 1.46

0.001

Total energy (Kcal) ††

2356.21 ± 673.67

2327.48 ± 658.89

0.76

2339.47 ± 520.13

2269.47 ± 636.65

2418.53 ± 808.24

0.43

DPI

25 ± 11

29 ± 10

0.01

15 ± 3

25 ± 3

40 ± 6

< 0.001

‡Categorical Variables

Marital status, (%)

Married

85(75.9)

92(82.1)

0.25

57(77)

60(80)

60(60)

0.87

Single

27(24.1)

20(17.9)

17 (23)

15 (20)

15 (20)

Education (%)

Under Diploma

28 (25)

29(25.9)

0.7

22(29.7)

17(22.7)

18 (24)

0.22

Diploma

37 (33)

39(34.8)

30(40.5)

20(26.7)

26(34.7)

Bachelor

31(27.7)

33(29.5)

14(19.9)

26(34.7)

24 (32)

Postgraduate

16(14.3)

11(9.8)

8(10.8)

12 (16)

7(9.3)

Smoking status (%)

Non smokers

58(51.5)

45(40.4)

0.11

49(65.7)

39 (51.5)

33(44.8)

0.04

Smokers

54 (48.5)

63 (56.6)

25 (34.3)

36(48.5)

41(55.2)

Family history Of BPH

Yes

62(55.4)

56(50)

0.42

40(54.1)

40(53.3)

38(50.7)

0.9

No

50(44.6)

56(50)

34(45.9)

35(46.7)

37(49.3)

Physical activity

Light

84(75)

90(80.4)

0.58

61(82.4)

62(82.7)

51(68)

0.009

Moderate

23(20.5)

19 (17)

11(14.9)

8(10.7)

23(30.7)

Vigorous

5(4.5)

3(2.7)

2(2.7)

5(6.7)

1(1.3)

  1. † Data are analyzed by two−sample t−test unless otherwise indicated †† analysis performed by Mann −Whitney U test‡ Data are analyzed by chi−squared test or Fisher’s exact test. aP−value Obtained from ANOVA or Kruskal –Wallis or Chi−square test, where appropriate. Bolded p-values (<0.05) denote statistical significance