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Table 2 Characteristics of the study population according to urinary thiocyanate

From: Association between perchlorate, nitrate, and thiocyanate exposure and kidney stones prevalence in US adults: an analysis based on the national health and nutrition examination survey 2007–2018

Variable

Low urinary thiocyanate

High urinary thiocyanate

P value

Age, years (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 20–29

776(16.23)

1017(21.04)

Ìý

 30–39

869(16.45)

1087(18.66)

Ìý

 40–49

906(17.99)

987(19.63)

Ìý

 50–59

887(17.50)

974(21.04)

Ìý

 60–69

1165(15.98)

816(11.81)

Ìý

 70–80

1275(15.87)

591(7.81)

Ìý

Sex (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 F±ð³¾²¹±ô±ð

3224(56.12)

2386(44.30)

Ìý

 M²¹±ô±ð

2654(43.88)

3086(55.70)

Ìý

Race (n, %)

ÌýÌý

&±ô³Ù; 0.001

 N´Ç-°ä²¹³Ü³¦²¹²õ¾±²¹²Ô

3515(33.75)

2770(29.26)

Ìý

 C²¹³Ü³¦²¹²õ¾±²¹²Ô

2363(66.25)

2702(70.74)

Ìý

Marital status (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 N´Ç

1235(23.81)

1694(30.49)

Ìý

 Y±ð²õ

4643(76.19)

3778(69.51)

Ìý

Annual household income, US dollars (n, %)

ÌýÌý

&±ô³Ù; 0.001

 &±ô³Ù;$20,000

1106(11.73)

1248(14.77)

Ìý

 &²µ³Ù;$20,000

4772(88.27)

4224(85.23)

Ìý

Education Level (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 ≤High School

2731(34.16)

2759(42.47)

Ìý

 > High School

3147(65.84)

2713(57.53)

Ìý

Cardiovascular Disease (n, %)

ÌýÌý

0.02

 N´Ç

5206(91.13)

4956(92.78)

Ìý

 Y±ð²õ

672(8.87)

516(7.22)

Ìý

Hypertension (n, %)

ÌýÌý

0.002

 N´Ç

3217(60.04)

3302(64.46)

Ìý

 Y±ð²õ

2661(39.96)

2170(35.54)

Ìý

Diabetes Mellitus (n, %)

ÌýÌý

0.05

 N´Ç

4636(84.27)

4545(86.43)

Ìý

 Y±ð²õ

1242(15.73)

927(13.57)

Ìý

Smoke (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 L±ð²õ²õ

3881(66.68)

2255(43.58)

Ìý

 M´Ç°ù±ð

1997(33.32)

3217(56.42)

Ìý

Alcohol user (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 N´Ç

1096(13.05)

496(7.10)

Ìý

 Y±ð²õ

4782(86.95)

4976(92.90)

Ìý

BMI (n, %)

ÌýÌý

&±ô³Ù; 0.0001

 &±ô³Ù;25

1757(32.45)

1468(25.87)

Ìý

 ≥25

4121(67.55)

4004(74.13)

Ìý

Moderate recreational activity (n, %)

ÌýÌý

&±ô³Ù; 0.001

 N´Ç

3048(42.48)

2906(47.42)

Ìý

 Y±ð²õ

2830(57.52)

2566(52.58)

Ìý

Sitting time, hours (n, %)

ÌýÌý

0.02

 &±ô³Ù;5

2642(35.24)

2396(38.95)

Ìý

 ≥5

3236(64.76)

3076(61.05)

Ìý

eGFR (mL/min/1.73Ìým^2,SE)

92.2(0.6)

96.9(0.5)

&±ô³Ù; 0.0001

KSD (n, %)

ÌýÌý

0.08

 N´Ç

5315(90.78)

4935(89.21)

Ìý

 Y±ð²õ

563(9.22)

537(10.79)

Ìý