Clinical trial NCT01118806: Vitamin D Levels in Residents in Medicine
Official title: Vitamin D Deficiency in Medical Residence in Israel
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Vitamin D Deficiency
Lead sponsor: Meir Medical Center
Sponsor class: OTHER
First posted: 2010-05-07
Enrollment: 106
Sex: MALE
Minimum age (years): 18
Maximum age (years): 50
Standard ages: ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: CROSS_SECTIONAL
Sampling method: NON_PROBABILITY_SAMPLE
Study population: medical staff, interns doing night shifts. nursing staff.

Brief summary: the study aims to messure the vitamin D levels in medical staff in the hospital. The physicians in the course of their internship who work indoors and work many night shifts have limited sun exposure in all seasons. Nursing staff who work shifts and work indoors are at the same risk of liltle sun exposure. The study addresses the amount of sun exposure, assessed by a sun exposure questioner, age, gender,work load related to number of shifts in the physicien group and in nursing group the job percentile we also adress religion (clothing cover)as a factor.

Detailed description: The population in Israel is heterogeneous in the aspect of skin exposure to the sun. Women in the Moslem community with traditional long sleeve dress code whose sun exposure to the sun even in the summer months is limited.

The physicians in the course of their internship who work indoors and work many night shifts and nurses with their shift work have limited sun exposure in all seasons.

The study addresses the amount of sun exposure, assessed by a sun exposure questioner, age, gender,number of shifts in the physicien group and in nursing group the job percentile religion (clothing cover).

The standard for measuring vitamin D status is 25(OH) D levels in the serum. The staff members from which blood will be drawn will be have an explanation about the aim of the study and will sign an informed consent.

Eligibility criteria: Inclusion Criteria:medical staff Exclusion Criteria:pregnancy

Primary outcomes:
measure: Low vitamin D levels in direct relation to nomber of shifts/ job percentile
timeFrame: 1 year
measure: low leves of vitamin D in direct relationship to nomber of shifts job percentile
timeFrame: 1 year
Secondary outcomes:
Other outcomes:
Locations:
city: Kfar Saba
country: Israel
facility: Meir medicalc enter
Study officials:
affiliation: Meir Medical Center
name: Assaf Stein, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Keith I. Ethamsylate and blood loss in total hip replacement. Anaesthesia. 1979 Jul-Aug;34(7):666-70. doi: 10.1111/j.1365-2044.1979.tb06368.x.
citation: Holick MF. Vitamin D deficiency. N Engl J Med. 2007 Jul 19;357(3):266-81. doi: 10.1056/NEJMra070553. No abstract available.
citation: Millen AE, Bodnar LM. Vitamin D assessment in population-based studies: a review of the issues. Am J Clin Nutr. 2008 Apr;87(4):1102S-5S. doi: 10.1093/ajcn/87.4.1102S.
citation: Holick MF, Chen TC. Vitamin D deficiency: a worldwide problem with health consequences. Am J Clin Nutr. 2008 Apr;87(4):1080S-6S. doi: 10.1093/ajcn/87.4.1080S.
citation: McCarty CA. Sunlight exposure assessment: can we accurately assess vitamin D exposure from sunlight questionnaires? Am J Clin Nutr. 2008 Apr;87(4):1097S-101S. doi: 10.1093/ajcn/87.4.1097S.