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. 2021 Dec 16;11(12):e053951. doi: 10.1136/bmjopen-2021-053951

Table 1.

Eligibility criteria

Inclusion criteria Exclusion criteria
  • Informed Consent to the study as documented by a signature.

  • Chronic (>3 years) traumatic or non-traumatic spinal cord injury a vertebral lesion level of C4 or below.

  • Between 18–60 years old.

  • Wheelchair dependency during activities of daily living, defined by a score of 0–2 in the Spinal Cord Independence Measure, subsection ‘Mobility in the house’.

  • An insufficient vitamin D status (≤75 nmol/L) at the first visit.

  • Contraindications to the investigational product, including known hypersensitivity or allergy to the cholecalciferol or alcohol solution.

  • Clinically relevant disorders, including renal dysfunction, hepatic dysfunction, cardiovascular disease, lung disease, diabetes, blood disease, parathyroid disease, cancer, depression, alcohol abuse and/or the intake of significant concomitant medication (including osteoporosis treatment and benzothiadiazide derivatives). This will be assessed on an individual basis.

  • Grade 3 or 4 pressure injuries.

  • Women who are pregnant or planning to become pregnant during the study period.

  • Women who are breast feeding.

  • Fractures in both arms and/or both legs within the last 5 years.

  • Intake of >400 IU/day vitamin D supplementation during the last 12 months before recruitment or during the study.

  • Visiting a country with increased sun exposure (below the 37th parallel north, that is, the southern hemisphere) within 1 month before enrolment or during the study.

  • Inability to understand or decide on study participation (ie, make an informed consent) and to adhere to the study protocol, for example, due to language or psychological problems.