In this large population-based contemporary cohort study from the United Kingdom, we analyzed more than 2 million women of childbearing age, of whom 0.3% were diagnosed with CD. We have shown that the presentation of fertility problems in primary care
in women with and without CD is very similar. In addition, the rates of new clinically recorded fertility problems in women with diagnosed and undiagnosed CD were similar and comparable with the rates in women without CD except for the 25–29 year age group in women with diagnosed CD, who had a 40% relative increase in fertility problems compared with women without CD, which corresponded to an absolute excess risk of 0.5%. We assessed the association between celiac disease and fertility problems with data on over 2 million women over a period of 20 years. Given the find more natural decrease in fertility with age, an overall prevalence would mask the effects of increasing association between CD and fertility problems. Therefore, we
have presented age-specific rates of new clinically recorded fertility problems in women, which are more meaningful in planning interventions. To account for the increasing prevalence of CD29 and reporting PD-332991 of fertility problems19 over time, we also adjusted for calendar year and also for other potential confounders such as smoking, socioeconomic status, BMI, and other autoimmune diseases known to be common in women with CD and associated with fertility problems.31 Previous studies have identified women with CD from specialist infertility clinics9, 10, 14 and 32 or obstetrics and gynecology units in the hospital.11, 12 and 13 This may be only a selective group of women because not all women who experience difficulties in conceiving seek medical help. The proportion of women seeking medical help for their fertility problem in the United Kingdom ranges from 70% to 85%.33 and 34 Studies from
the United Kingdom report that between 30% and 49% of women reporting fertility problems are given referrals or undergo fertility treatments.33 and 35 Therefore, women selected from specialist fertility clinics may be significantly different from the majority of women experiencing fertility problems, especially in terms of sociodemographics, making the Methisazone previous studies highly prone to selection bias. By contrast, we identified women from routinely collected primary care data in which the women initially will consult for fertility problems before going for specialized treatments or investigations. Primary care data therefore provide a more complete picture of the extent and distribution of clinically recorded fertility problems at a population level while minimizing the potential for selection bias. It could be argued, however, that women with CD in our population are more likely to have fertility problems that require specialist medical treatment than women without CD.
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