Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Prevention of Falls and Fractures in Old People by Administration of Calcium and Vitamin D. Randomized Clinical Trial (ANVITAD)
Brief Summary: The first objective is to determine the efficacy of calcium and vitamin D supplementation at doses of 1200 mg and 800 IU, respectively, to reduce the incidence of falls and fractures in non-institutionalized elderly people.

The second objective is to measure and compare treatment groups (calcium and vitamin D vs placebo) as regards muscle strength and musculoskeletal function, bone mineral density, calcidiol level and treatment safety.


Options:
A: Arm Label: 1; Type: EXPERIMENTAL; Interventions: Dietary Supplement: calcium supplementation | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Dietary Supplement: calcium and vitamin D3 supplementation | Arm Label: 3; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: calcium supplementation; Assigned to Arm(s): 1 | Intervention Type: DIETARY_SUPPLEMENT; Name: calcium and vitamin D3 supplementation; Assigned to Arm(s): 2 | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): 3
B: Arm Label: vitamin D3 400 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: vitamin D3 800 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: vitamin D3 1600 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: vitamin D3 2400 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: vitamin D3 3200 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: vitamin D3 4000 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: vitamin D3 4800 IU daily; Type: EXPERIMENTAL; Interventions: Dietary Supplement: Vitamin D3, Dietary Supplement: Calcium Citrate (Citracal) | Arm Label: placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Vitamin D3 | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D3; Assigned to Arm(s): placebo, vitamin D3 1600 IU daily, vitamin D3 2400 IU daily, vitamin D3 3200 IU daily, vitamin D3 400 IU daily, vitamin D3 4000 IU daily, vitamin D3 4800 IU daily, vitamin D3 800 IU daily | Intervention Type: DIETARY_SUPPLEMENT; Name: Calcium Citrate (Citracal); Assigned to Arm(s): vitamin D3 1600 IU daily, vitamin D3 2400 IU daily, vitamin D3 3200 IU daily, vitamin D3 400 IU daily, vitamin D3 4000 IU daily, vitamin D3 4800 IU daily, vitamin D3 800 IU daily
C: Arm Label: Calcium and vitamin D; Type: EXPERIMENTAL; Interventions: Drug: Vitamin D and calcium suplementation | Intervention Type: DRUG; Name: Vitamin D and calcium suplementation; Assigned to Arm(s): Calcium and vitamin D
D: Arm Label: pioglitazone; Type: ACTIVE_COMPARATOR; Interventions: Drug: pioglitazone | Arm Label: rosiglitazone; Type: ACTIVE_COMPARATOR; Interventions: Drug: rosiglitazone | Arm Label: TZD placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: placebo | Arm Label: Vitamin D; Type: ACTIVE_COMPARATOR; Interventions: Dietary Supplement: Vitamin D | Arm Label: Vitamin D placebo; Type: PLACEBO_COMPARATOR; Interventions: Dietary Supplement: Placebo | Intervention Type: DRUG; Name: pioglitazone; Assigned to Arm(s): pioglitazone | Intervention Type: DRUG; Name: rosiglitazone; Assigned to Arm(s): rosiglitazone | Intervention Type: DRUG; Name: placebo; Assigned to Arm(s): TZD placebo | Intervention Type: DIETARY_SUPPLEMENT; Name: Vitamin D; Assigned to Arm(s): Vitamin D | Intervention Type: DIETARY_SUPPLEMENT; Name: Placebo; Assigned to Arm(s): Vitamin D placebo

Answer: C