Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland

Study Overview
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Brief Summary
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The purpose of this study is to determine the prevalence of vitamin D deficiency among the population of pregnant women receiving prenatal care and giving birth at the investigators' clinic. The further purposes are to identify the population at risk for vitamin D deficiency and to analyse whether vitamin D deficiency is associated with pregnancy complications.

Official Title
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Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland

Conditions
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Vitamin D Deficiency

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Pregnant women attending prenatal care at our clinic who had a vitamin D blood-testing at admission Exclusion Criteria: Pregnant women lost to follow-up, Birth outside our clinic
Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prevalence of vitamin D deficiency | Number of patients with vitamin D deficiency after testing of vitamin D blood level at admission for prenatal care in our clinic | Between the 1th and the 36th week of pregnancy | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| BMI as a risk factor for vitamin D deficiency | Presence of an association between the patient's BMI and their vitamin D blood level? | Between the 1th and the 36th week of pregnancy | 
| Ethnicity as a risk factor for vitamin D deficiency | Presence of an association between the patient's ethnicity and their vitamin D blood level? | Between the 1th and the 36th week of pregnancy | 
| Age as risk factor for vitamin D deficiency | Presence of an association between the patient's age and their vitamin D blood level ? | Between the 1th and the 36th week of pregnancy | 
| Period of the year as risk factor for vitamin D deficiency | Presence of an association between the period of the year at the time of the blood testing and the vitamin D blood level? | Between the 1th and the 36th week of pregnancy | 
| Smoking Status as risk factor for vitamin D deficiency | Presence of an association between the patient's smoking status and the vitamin D blood level ? | Between the 1th and the 36th week of pregnancy | 
| Association between vitamin D blood level and gestational diabetes mellitus | Presence of an association between the vitamin D blood level and the occurrence of gestational diabetes mellitus? | Between the 1th and the 36th week of pregnancy | 
| Association between vitamin D blood level and gestational hypertension and preeclampsia | Presence of an association between the vitamin D blood level and the occurrence of gestational hypertension and preeclampsia ? | Between the 1th and the 36th week of pregnancy | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Vitamin D; Pregnancy