Health Questionnaires

The Ontario Health Study collects health data by asking participants to fill out online questionnaires about their health.

Baseline Questionnaire

As part of registration for the Study, participants were asked to fill out our baseline questionnaire, which looks at things such as:

  • Demographics
  • Personal and family health history
  • Sleep patterns
  • Physical activity
  • Emotional health and well-being
  • Alcohol and tobacco use
  • Environmental exposures

Follow-up Questionnaires

Because the Ontario Health Study is a long-term study, one of the things that researchers are interested in how your health changes over time. We track our participants’ health over time by asking them to fill out follow-up questionnaires from time to time.

A number of questions are similar to those on the baseline questionnaire. The questions repeated are those that you might answer differently such as your weight and habits such as alcohol and tobacco use.

The OHS will be conducting its first follow-up questionnaire. In addition to collecting updated information about your health, lifestyle, medical and family history, there are new questions related to:

  • eCigarette use
  • Marijuana use
  • Over-the-counter medication use
  • Mental health

If you are a current participant, log in to your account to complete the questionnaire.