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Completed

NCT Number: NCT02904720

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

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.

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Key information

Conditions

Vitamin D Deficiency Avitaminosis Deficiency Diseases Malnutrition Nutrition Disorders Nutritional and Metabolic Diseases

Sex eligibility

Female

Study type

Observational

Primary location

University Hospital Bern

Bern, 3010, Switzerland

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Primary outcomes

  1. Prevalence of vitamin D deficiency

    Time frame: Between the 1th and the 36th week of pregnancy

    Number of patients with vitamin D deficiency after testing of vitamin D blood level at admission for prenatal care in our clinic

Secondary outcomes

  1. BMI as a risk factor for vitamin D deficiency

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the patient's BMI and their vitamin D blood level?

  2. Ethnicity as a risk factor for vitamin D deficiency

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the patient's ethnicity and their vitamin D blood level?

  3. Age as risk factor for vitamin D deficiency

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the patient's age and their vitamin D blood level ?

  4. Period of the year as risk factor for vitamin D deficiency

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the period of the year at the time of the blood testing and the vitamin D blood level?

  5. Smoking Status as risk factor for vitamin D deficiency

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the patient's smoking status and the vitamin D blood level ?

  6. Association between vitamin D blood level and gestational diabetes mellitus

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the vitamin D blood level and the occurrence of gestational diabetes mellitus?

  7. Association between vitamin D blood level and gestational hypertension and preeclampsia

    Time frame: Between the 1th and the 36th week of pregnancy

    Presence of an association between the vitamin D blood level and the occurrence of gestational hypertension and preeclampsia ?

Other outcomes

  1. Association between vitamin D blood level and the mode of delivery at birth

    Time frame: At delivery time

    Presence of an association between the vitamin D blood level and the mode of delivery (Vaginal delivery, instrumentalized delivery, primary and secondary cesarean)?

  2. Association between vitamin D blood level and the gestational age at delivery

    Time frame: At delivery time

    Presence of an association between the vitamin D blood level and the gestational age at delivery? Occurrence of preterm birth (before 37W) or postterm birth (after 40W)?

  3. Association between vitamin D blood level and newborn growth

    Time frame: From week 1 until birth

    Presence of an association between vitamin D blood level and the occurrence of intrauterin growth retardation or small-for-gestational age child? With assessment of measure like length, weight, head perimeter.

Sponsors and collaborators

Lead sponsor

Insel Gruppe AG, University Hospital Bern

Other

Collaborators

  • Significantis GmbH

Registry information

Acronym: PCVDDPWS

Important dates

Study start
2015
Primary completion
2016
Study completion
2016
First posted
Sep 19, 2016
Registry last updated
Sep 19, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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