Table 3.
Maternal variables and biological samples collected via questionnaires and clinic visits
| Variables | <14 weeks | 14–26 weeks | 27–40 weeks | 3 months postpartum | 6 months postpartum | 1 year | 2 years | 3 years | 5 years | 8 years |
| Sociodemographics | ||||||||||
| Household income | X | X | X | |||||||
| Education | X | |||||||||
| Marital status | X | X | X | |||||||
| Age | X | |||||||||
| Primary language | X | |||||||||
| Born in Canada | X | |||||||||
| Family background | X | X | X | X | X | X | X | X | X | |
| Family history | X | |||||||||
| Health and lifestyle | ||||||||||
| General health | SF-8 | SF-8 | SF-8 | SF-8 | SF-8 | |||||
| Current medical conditions and medications | X | X | X | X | X | X | X | X | ||
| Substance use | X | X | X | X | X | X | X | X | X | |
| Parenting | X | X | ||||||||
| Pregnancy history | ||||||||||
| Pre-pregnancy physical activity | X | X | X | X | X | X | X | X | ||
| Physical activity | GLTE | GLTE | GLTE | GLTE | GLTE | GLTE | GLTE | GLTE | GLTE | |
| Dental care | X | X | X | |||||||
| Dietary changes since pregnancy | X | |||||||||
| Food security | CCHSC | CCHSC | ||||||||
| Nutrition counselling information | X | |||||||||
| Diet history pre-pregnancy | FFQ | |||||||||
| Nausea and vomiting | PUQUE | PUQUE | PUQUE | |||||||
| *Breastfeeding information | X | X | X | X | X | |||||
| 24-hour recall of foods consumed | X | X | X | X | X | X | X | X | ||
| Psychosocial health | ||||||||||
| Depression | ||||||||||
| Stress | EDS | EDS | EDS | EDS | EDS | EDS | EDS | EDS | CESD | CESD |
| Social support | SLEQ | SLEQ | SLEQ | SLEQ | SLEQ | SLEQ, PSS | SLEQ, PSS | SLEQ, SSI | ||
| Attachment | SSQ | SSQ | SSQ | SSQ | SSQ | SSQ | SSQ | SSQ | SSQ, SSI, ECR | ECR |
| DSM-IV Axis I disorders | PDSQ | PDSQ | ||||||||
| Anxiety | SCL-90-R | SCL-90-R | SCL-90-R | SCL-90-R | SCL-90-R | SCL-90-R | SCL-90-R | SCL-90-R | SCL-90-R | STAI |
| Adverse childhood events | X | |||||||||
| History of mental health | X | X | X | X | X | X | ||||
| Anthropometrics (BMI/height/weight) | X | X | X | X | ||||||
| Personality traits | ||||||||||
| Personality traits | TIPI | |||||||||
| Biological specimens | ||||||||||
| Urine | X | X | X | X | ||||||
| Venous blood | X | X | ||||||||
| *Breast milk | X | |||||||||
X refers to investigator-developed measures.
*Breastfeeding mothers only.
ACEs, Adverse Childhood Experiences Questionnaire; CCHSC, Canadian Community Health Survey Cycle 2.2, modified; CES-D, Centre for Epidemiologic Studies Depression Scale; ECR, Experiences in Close Relationship Scale; EDS, Edinburgh Depression Scale; FFQ, Food Frequency Questionnaire, adapted from the Canadian version of the Diet History Questionnaire; GLTE, Godin Leisure-Time Exercise Questionnaire; OECD, Organization for Economic Cooperation and Development Guidelines on Measuring Subjective Wellbeing; PDSQ, Psychiatric Diagnostic Screening Questionnaire; PSS, Perceived Stress; PUQE, Pregnancy-Unique Quantification of Emesis and Nausea Questionnaire; SCL-90-R, Symptom Checklist-90-Revised; SF-8, Short Form Health Survey-8; SLEQ, Stressful Life Events Questionnaire; SSI, Social Support Index; SSQ, Social Support Questionnaire; STAI, State-Trait Anxiety Inventory; TIPI, Ten-Item Personality Inventory.