Table 1 Association between early menopause (40–44 years) and selected variables

Marital status

Married

8.5

1186

Ref.

Unmarried

7.4

204

0.79

0.45

1.39

Widowed

15.2

171

1.89

1.18

3.02

Divorced or separated

10.9

558

1.32

0.94

1.86

Parity

0

9.9

304

Ref.

1–3

9.8

1618

1.03

0.68

1.56

>3

7.1

168

0.72

0.36

1.45

Age at menarche

12–15

9.1

1773

Ref.

<12

12.5

168

1.44

0.88

2.35

>15

11.5

182

1.36

0.83

2.22

Years of education

<8

18.4

163

Ref.

8–10

10.3

630

0.51

0.32

0.82

11–12

9.6

426

0.50

0.30

0.83

>12

7.3

874

0.37

0.23

0.60

Social participation

Low

11.3

964

Ref.

Medium

8.3

931

0.72

0.53

0.98

High

5.4

148

0.49

0.23

1.04

Self reported health

Good

7.8

1354

Ref.

Bad

12.9

728

1.83

1.36

2.47

Body mass index

18.5–24.9

9.3

965

Ref.

<18.5

16.8

18

1.95

0.55

6.98

25.0–29.9

9.8

724

1.12

0.81

1.56

≥30

9.5

367

1.13

0.74

1.70

Physical activity (hours per week)

0

10.7

844

Ref.

<1

8.7

412

1.02

0.59

1.75

1–2

7.6

406

0.79

0.43

1.44

≥3

10.8

167

0.70

0.38

1.30