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Table 3 Two-sample MR estimates of relationship between female reproductive factors and Stress urinary incontinence

From: The causal effect of reproductive factors on pelvic floor dysfunction: a Mendelian randomization study

Exposure

MR

Method

Female genital prolapse

Heterogeneity

Horizontal pleiotropy

No. of

SNPs

OR

(95% CI)

P-Value

Cochran’s

Q

P-Value

Egger intercept

P-Value

Age at menarche

IVW

5

0.999

(0.997–1.001)

0.462

4.057

0.398

1.069e-04

0.856

MR-Egger

0.998

(0.989–1.008)

0.760

WM

1.000

(0.997–1.002)

0.779

Simple mode

1.001

(0.997–1.005)

0.613

Weighted mode

1.001

(0.998–1.004)

0.554

Age at menopause

IVW

37

1.000

(0.999–1.001)

0.484

70.584

0.501e-03

1.287e-04

0.418

MR-Egger

0.999

(0.998–1.001)

0.588

WM

1.000

(0.999–1.001)

0.365

Simple mode

1.001

(0.999–1.002)

0.113

Weighted mode

1.001

(1.000–1.001)

0.189

Age at

first birth

IVW

54

0.998

(0.997–0.999)

7.659e-05

71.058

0.049

3.223e-05

0.869

MR-Egger

0.998

(0.992–1.003)

0.372

WM

0.998

(0.997–0.999)

0.004

Simple mode

0.998

(0.995–1.001)

0.189

Weighted mode

0.997

(0.994–0.999)

0.032

Age at

last live birth

IVW

4

0.993

(0.985–1.001)

0.071

2.268

0.519

0.001

0.286

MR-Egger

0.946

(0.886–1.010)

0.240

WM

0.995

(0.985–1.001)

0.358

Simple mode

0.996

(0.980–1.013)

0.683

Weighted mode

0.996

(0.982–1.011)

0.655

Age at

first sexual intercourse

IVW

145

0.994

(0.991–0.997)

8.716e-05

216.998

8.082e-05

1.427e-04

0.178

MR-Egger

0.985

(0.972–0.999)

0.035

WM

0.994

(0.990–0.997)

4.820e-04

Simple mode

0.996

(0.985–1.007)

0.418

Weighted mode

0.994

(0.985–1.004)

0.224