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Table 2 Factor loadings for each item of CFKS-J in the General (n = 4,328) and Triers (n = 618) group

From: A cross sectional study on fertility knowledge in Japan, measured with the Japanese version of Cardiff Fertility Knowledge Scale (CFKS-J)

  

Factor loadinga

 

Item

General group

Triers group

1

A woman is less fertile after the age of 36 years. [True]

0.62

0.58

2

A couple would be classified as infertile if they did not achieve a pregnancy after one year of regular sexual intercourse without using contraception. [True]

0.40

0.32

3

Smoking decreases female fertility. [True]

0.63

0.63

4

Smoking decreases male fertility. [True]

0.67

0.66

5

About 1 in 10 couples are infertile. [True]

0.56

0.63

6

If a man produces sperm he is fertile. [False]

0.53

0.59

7

These days a woman in her 40s has a similar chance of getting pregnant as a woman in her 30s. [False]

0.59

0.67

8

Having a healthy lifestyle makes you fertile. [False]

0.65

0.72

9

If a man has had mumps after puberty he is more likely to later have a fertility problem. [True]

0.44

0.38

10

A woman who never menstruates is still fertile. [False]

0.30

0.34

11

If a woman is overweight by more than 13 kg then she may not be able to get pregnant. [True]

0.54

0.51

12

If a man can achieve an erection then it is an indication that he is fertile. [False]

0.66

0.66

13

People who have had a sexually transmitted disease are likely to have reduced fertility. [True]

0.60

0.55

  1. aOnly factor loadings for the first factor shown.