The use of sophisticated statistical methods.

Recruiting the required number of participants according to the defined inclusion criteria within the planned timeframe.

A well-defined title for the main study.

The researchers’ experience of participating in the study.

Efficient use of the study budget.

To validate the research hypothesis using rigorous statistical methods for data analysis.

To conduct a theoretical analysis based solely on a literature review without a preliminary study.

To test the full study protocol on a small sample and identify areas for improvement.

To assess funding availability and precisely calculate the sample size for the main study.

To evaluate only the ethical procedures and participant safety during the study.

It allows respondents to express their opinions by selecting only positive answers.

It provides predefined response options without a graded scale.

It allows respondents to choose between two options: "Yes" or "No."

It defines entirely subjective response options.

It rates responses on a scale from "strongly agree" to "strongly disagree."

A paper-based questionnaire without the option for electronic completion.

A questionnaire that consists only of open-ended questions of varying lengths.

A questionnaire that requires all questions to be answered without the option to skip any.

A questionnaire that includes various question types, including open-ended ones.

A questionnaire with short, clear questions and interactive rating scales.

Expert panel evaluation.

Assessing the length and complexity of the questionnaire.

Reviewing the procedures for respondent selection.

Calculating Cronbach’s alpha coefficient.

Analyzing open-ended questions.

Using neutral wording and clearly defined time frames.

Using multiple-choice questions without specifying a time frame.

Allowing respondents to interpret and answer questions freely without prior instructions.

Using leading questions to guide respondents toward specific responses.

Including open-ended personal questions that encourage respondents to provide preferred answers.

Neutrally worded questions with no leading phrasing.

Random selection of respondents to ensure representativeness.

Standardized response options that reduce ambiguity.

Pilot testing of the questionnaire before primary data collection.

Leading questions that encourage respondents to choose specific answers.

The ease of use of the questionnaire reduces the time required for completion.

The questions' clarity ensures that all patients interpret them similarly.

The variety of responses available in open-ended questions.

The ability of the questionnaire to be adapted for different patient groups.

The repeatability and consistency of results when the questionnaire is completed multiple times.

It ensures that all respondents complete the questionnaire in the same way.

It determines the repeatability (stability) of the results when the questionnaire is completed multiple times.

It defines the nature of the questions, such as their length and simplicity.

It collects data that can be interpreted in multiple ways.

It measures precisely the aspect of health it is designed to assess.