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Table 1 Research question development according to the PICO strategy

From: Auriculotherapy to control chemotherapy-induced nausea and vomiting in patients with cancer: protocol of a systematic review

PICO

Components

Review question

What is the auriculotherapy effect in controlling the nausea and vomiting induced by chemotherapy in patients with cancer in comparison to the Sham auriculotherapy, to the routine treatment, or other non-pharmacological interventions?

Population

Patients with cancer undergoing chemotherapeutic antineoplastic treatment

Intervention

Auriculotherapy with seeds (mustard/Vaccaria), metallic points, magnetic points, plastic points (crystals) needles (semi-permanent and systemic), stiper, radionic crystals, electroacupuncture, chromotherapy, laser therapy, and electromagnetic stimulation (hai hua)

Comparator

Sham auriculotherapy, routine treatment with antiemetic drugs, and other non-pharmacological interventions

Outcomes

Chemotherapy-induced nausea and vomiting control (acute, delayed, anticipated) and adverse events originated from the uses of auriculotherapy as a CINV treatment for patients with cancer