Situation: The public health nurse at a Rural Health Unit (RHU) is planning a series of health education sessions on diabetes self-care for adults in a farming barangay. Many of the participants finished only elementary school, and most understand the local language better than English. Before planning the sessions, the nurse meets with eight adults with diabetes. Each first writes down, without talking, reasons why people in the barangay delay starting insulin. Each then reads one idea aloud in turn, with no debate, until all ideas are listed, and the members vote privately to rank them. Which needs assessment method is the nurse using?

The nominal group technique is a structured small-group method: silent generation of ideas, round-robin listing without debate, brief clarification, and private voting to rank the ideas. A focus group discussion relies on free interaction to draw out in-depth views and feelings, and the Delphi technique also ranks ideas toward consensus but through anonymous questionnaires to experts who never meet. A key informant interview questions one leader at a time.

Needs assessment method

The scenario describes a structured meeting in which eight participants first write down their ideas silently and independently, then share one idea at a time in a round-robin fashion without debate, and finally rank the ideas through private voting. This sequence is the defining signature of the Nominal Group Technique (NGT).

NGT is a face-to-face, small-group consensus method that deliberately separates idea generation from evaluation to prevent dominant voices from shaping the list. The silent writing phase ensures that every participant, including those with limited formal education or hesitancy in group settings, contributes before hearing others. The round-robin listing gives equal weight to each person, and the private ranking reduces social pressure — a practical advantage when working with a farming community where hierarchy or shyness might otherwise suppress input.

The other options differ in one or more critical ways. A focus group discussion depends on free-flowing interaction and facilitator-guided conversation to explore feelings and depth; it does not use silent generation, round-robin listing, or private voting. The Delphi technique also seeks consensus and ranking, but it is conducted through anonymous questionnaires with experts who typically never meet face-to-face, often over multiple rounds. A key informant interview involves questioning one knowledgeable individual at a time, not a structured group process.

Feature	Nominal Group Technique	Focus Group	Delphi	Key Informant Interview
Setting	Small group, face-to-face	Small group, face-to-face	Experts, usually remote	One person at a time
Idea generation	Silent, written, independent	Open discussion	Questionnaire responses	Verbal interview
Interaction	Round-robin listing, no debate	Free interaction	No direct interaction	Interviewer–respondent only
Prioritization	Private voting to rank	Not typically ranked	Anonymous ranking over rounds	Not applicable

Watch out! The presence of “voting to rank” can tempt you toward Delphi, but Delphi lacks the face-to-face round-robin and silent written phase. The scenario’s in-person, structured, equal-participation steps point exclusively to NGT.

Key point! NGT is especially useful in community health needs assessment with low-literacy or linguistically diverse groups because the written phase can be adapted to simple words or symbols, and the structured turn-taking prevents a few vocal members from dominating the list of perceived barriers to insulin initiation.