Table 2 Comparison of characteristics of primary and secondary infertile groups
From: Prevalence and associated factors of infertility among 20–49 year old women in Henan Province, China
Characteristic | Primary infertility (n = 50) | Secondary infertility (n = 138) | p-value | ||
|---|---|---|---|---|---|
n | % | n | % | ||
Household registry | |||||
Non-agricultural | 17 | 34.0 | 75 | 54.3 | 0.014 |
Agricultural | 33 | 66.0 | 63 | 45.7 | |
Age (years) | |||||
20–24 | 2 | 4.0 | 0 | 0.0 | < 0.001 |
25–29 | 16 | 32.0 | 6 | 4.4 | |
30–34 | 21 | 42.0 | 54 | 39.1 | |
35–39 | 9 | 18.0 | 45 | 32.6 | |
40–44 | 2 | 4.0 | 22 | 15.9 | |
45–49 | 0 | 0.0 | 11 | 8.0 | |
Age of marriage (years) | |||||
≤ 24 | 15 | 30.0 | 63 | 45.7 | 0.014 |
25–29 | 28 | 56.0 | 66 | 50.7 | |
≥ 30 | 7 | 14.0 | 5 | 3.6 | |
Age of first sexual intercourse (years) | |||||
< 20 | 4 | 8.0 | 14 | 10.1 | < 0.001 |
20–25 | 23 | 46.0 | 100 | 72.5 | |
> 25 | 23 | 46.0 | 24 | 17.4 | |
History of cervicitis | |||||
Yes | 3 | 6.0 | 26 | 18.8 | 0.031 |
No | 47 | 94.0 | 112 | 81.2 | |