| Measurements | Enrolment (2001-2009) | Follow-up (2004 and 2008) | |
|---|---|---|---|
| Questionnaires* (n = 31 072) | Survey 2004† (n = 9 660) | Survey 2008 (n = 20 707) | |
| Demographic information | |||
| Current employment status | Yes | Yes | Yes |
| Occupational history | Yes | ||
| Shift work | Yes | ||
| Marital status | Yes | Yes | Yes |
| Education level | Yes | Yes | |
| Annual household income | Yes | Yes | |
| Ethnic background | Yes | Yes | Yes |
| Cancer and chronic disease | |||
| Personal health history‡ | Yes | Yes | Yes |
| Personal cancer diagnosis | Yes | Yes | Yes |
| Family structure (number of siblings, age of parents, cause of parental death) | Yes | ||
| Family history of cancer | Yes | Yes | |
| Family history of health conditions§ | Yes | ||
| Anthropometrics¶ | |||
| Height | Yes | Yes | Yes |
| Weight | Yes | Yes | Yes |
| Waist circumference | Yes | Yes | Yes |
| Hip circumference | Yes | Yes | Yes |
| Lifetime weight patterns | Yes | ||
| Diet | |||
| Food frequency questionnaire (including use of supplements) | Yes | ||
| Past 7 day intake of fruit and vegetables | Yes | ||
| Physical activity** | |||
| Employment/volunteer activities | Yes | Yes | |
| Household activities | Yes | Yes | |
| Recreation/leisure activities | Yes | Yes | |
| Sedentary behaviours | Yes | ||
| Smoking and tobacco | |||
| Current and past use of tobacco | Yes | Yes | Yes |
| Second-hand smoke exposure | Yes | ||
| Quitting behaviours | Yes | ||
| Alcohol | |||
| Alcohol use | Yes | Yes | |
| Beverage type and amount | Yes | Yes | |
| Sleep | |||
| Sleep pattern | Yes | Yes | |
| Screening and risk behaviours | |||
| Colon cancer screening (fecal occult blood test, colonoscopy, sigmoidoscopy) | Yes | Yes | Yes |
| Sun exposure - sunburn history | Yes | Yes | |
| Sun exposure - sunscreen use, tanning, risk of sunburn | Yes | ||
| Primary care service use | Yes | ||
| Men's reproductive health | |||
| Prostate spectific antigent screening | Yes | Yes | Yes |
| Enlarged prostate | Yes | ||
| Vasectomy | Yes | ||
| Women's reproductive health | |||
| Papanicolaou test screening | Yes | Yes | Yes |
| Mammogram screening | Yes | Yes | Yes |
| Breast exam | Yes | ||
| Menstruation (age at onset) | Yes | ||
| History of pregnancy and breastfeeding | Yes | ||
| Oral contraceptive use | Yes | ||
| Menopause (age, use of hormone replacement and alternative therapies) | Yes | Yes | |
| Oophrectomy or hysterectomy | Yes | Yes | Yes |
| Perceived health and quality of life | |||
| General health rating | Yes | Yes | Yes |
| Stress and emotional state (anxiety, depression) | Yes | Yes | |
| Social support | Yes | ||
| Spirituality | Yes | ||
| Quality of life (mobility, self-care, pain) | Yes | Yes | |
| Perception of risk for cancer and diabetes | Yes | ||
| Built environment | |||
| Built environment | Yes | ||
| Residential history | Yes | ||
| Postal code | Yes | Yes | Yes |
*Enrolment measurements included the Health and Lifestyle Questionnaire (n = 31 072), the Canadian Diet History Questionnaire I (n = 26 843), and the Past Year Total Physical Activity Questionnaire (n = 26 769); 26 761 participants completed all 3 questionnaires (Health and Lifestyle Questionnaire, Canadian Diet History Questionnaire I and Past Year Total Physical Activity Questionnaire).
†An abbreviated version of Survey 2004 (Survey 2004 Express) was mailed to participants who did not return Survey 2004 to try to capture partial data on these participants. For the Express version, fewer questions were asked under each topic, but the questions that were asked were the same between questionnaires; 9197 participants completed Survey 2004, and 463 participants completed Survey 2004 Express.
‡Personal health history included self-reported physician diagnoses of chronic health conditions, including angina, chronic bronchitis, Crohn disease, cirrhosis of the liver, diabetes, emphysema, heart attack, hepatitis, high blood pressure, high cholesterol, polyps in colon and rectum, stroke and ulcerative colitis (all questionnaires), with the addition of arthritis, depression, high blood glucose, osteoporosis and thyroid problems in Survey 2004, and the addition of asthma, acid reflux, arthritis, heart problems, irritable bowel syndrome, osteoporosis and thyroid problems in Survey 2008.
§Family history of health conditions included diabetes, heart attack and stroke.
¶Anthropometric measurements are self-reported.
**Physical activity was measured over the previous year (Past Year Total Physical Activity Questionnaire) at enrolment and over the previous week (long-form International Physical Activity Questionnaire) at Survey 2008.