Poor question: “In the last week, did you exercise?”
The problem: The term ‘exercise’ isn’t clearly defined and could be interpreted differently by respondents — some might consider walking to and from their car exercise, whereas others may not consider anything that doesn’t cause them to sweat or breathe heavily as exercise.
Better question: “In the last week, did you exercise or participate in any physical activity for at least 20 minutes that made you sweat and breathe hard, such as running, swimming, cycling, or similar activities?”
Poor question: “Have you ever been diagnosed with CHD?”
The problem: Using acronyms and technical jargon will make it difficult for people who don’t know these terms to provide reliable answers.
Better question: “Have you ever been diagnosed with coronary heart disease (CHD) — a disease in which the blood vessels that supply oxygen and blood to the heart narrow?”
Poor question: “How often are you sad?”
The problem: A lack of time frame or context in which to answer can lead respondents to interpret the question differently (i.e. answer generally or pick a random reference period).
Better question: “In the past four weeks, how often have you felt sad?” or “On average, how often do you feel sad?”
Poor question: “When riding in the back seat of a car, how often do you wear a seat belt?”
The problem: This assumes the respondent rides in the back seat of a car, and does not provide an option for those who never ride in the back seat (it also doesn’t provide a time frame). To answer this question, you need to first determine if the respondent has ridden in the back seat, and if so, how often they wear a seat belt.
Better question(s): 1.a) “In the past year, have you ridden in the back seat of a car?” (IF YES) → 1.b) “When riding in the back seat of a car, how often do you wear a seat belt?”
Poor question: “How helpful were your friends and family while you were sick?”
The problem: This question is asking about the helpfulness of two seperate groups of people (1. friends and 2. family), so respondents will have to choose to either ignore part of the question or answer it as a single question and lump these groups together.
Better question(s): 1. “How helpful were your friends while you were sick?” and 2. “How helpful was your family while you were sick?”
Poor question: “Which of the following behaviours is not considered unacceptable?”
The problem: Double negatives can be confusing, and may result in unreliable responses — be as clear and unambiguous as possible.
Better question: “Which of the following behaviours is considered acceptable?”
Poor question: “How long ago did you leave your job?”
The problem: The format of the time period isn’t specified, whether it should be reported in days, months, or years.
Better question: “How many months ago did you leave your job?”
Poor question: “In the past 12 months, did your doctors treat you with respect (YES/NO)?”
The problem: This question is formatted as a binary question when the reality can be variable and nuanced.
Better question: “In the past 12 months, how often did your doctors treat you with respect?”
Poor question: “Are you currently: married, separated, divorced, widowed, living with a partner, or have you never been married?”
The problem: There are multiple ways this question can be answered by someone who has never been married and lives with a partner, or is separated and lives with a partner, etc.
Better question(s): 1. “What is your current marital status (married, separated, divorced, widowed, or never been married)?”, and 2. “Are you currently living with a partner/your spouse?”