Your next visit
What to expect when we see you next
Your next visit
What to expect when we see you next
Be prepared for your next visit with CHILD!
Yes, we’re doing it again!
Not many studies have collected as much data, over so many years, as CHILD. This is what makes CHILD such a uniquely valuable resource for health research.
Each new layer of data makes all our past efforts together pay off even more. Each new round of data collection makes the Study more powerful, enabling new questions and discoveries.
PLEASE JOIN US this next round. What we have built together is amazing. Let’s make it even better!
First, some important FAQs:
Why keep participating in CHILD?
You’ve done all this many times before. Is there good reason to do it all again?
Yes, we believe there is. That’s why we keep taking it on too, even though it means a lot of work and expense.
A great strength of a study like CHILD is its longitudinal quality: the fact that it keeps following its participants (you) across many years. The more years we collect data from you, the more questions we can answer about the origins of health and disease.
From following you for as long as we have, we have been able to trace early-life influences on your health in childhood. If we keep following you, we can learn about how early-life and childhood factors influence adolescent and adult health.
With each new round of data collection, we can also explore new things, by adding questions that make new sense of the data collected in past years.
It is not easy to organize and carry through on a cohort study like CHILD, so there are few studies around like it. This makes CHILD an extremely valuable resource for health researchers. The years we have put into it together are an enormous investment, and every new layer of data we add increases the value of all that we have done so far.
Is there anything different about this visit?
Have we changed anything about the visit? Should you expect anything new?
Yes, there are some new and different things planned for this round of data collection.
Given the maturity of our youth participants, we will be asking them to answer more questionnaires directly and lightening the load on parents.
In response to the expressed interests of study participants, we will be asking more questions relating to such things as mental health…
CONTENT HERE TO BE DEVELOPED BASED ON THE FINAL PROTOCOL, WITH INPUT FROM ITS ARCHITECTS!
Should you be nervous about your data & the things we'll learn about you?
If you answer questions honestly about personal things will we judge you or get you in trouble with your parents? Will other people find out?
No, absolutely not. All your answers are treated as strictly confidential. More importantly, all your data is collected and processed in such a way that it is de-identified (no one can connect it with you as an individual) before it is used for research. CHILD data is analyzed at the population (group) level, not at the level of the individual person.
We commit to treating your data this way in our agreements with you (your consent), and we are held to these standards by the research offices of the universities that host CHILD. We use specialized software and follow detailed protocols that safeguard these rules and keep your data as secure and private as possible.
If we could not guarantee confidentiality, data security, and the de-identification of your information, we would not ask you all the things we ask.
Only if we are trustworthy can we expect fully honest answers, and only fully honest answers make the research meaningful.
Next, our plans for your visit…
Click on any item below for more detail.
NEXT VISIT: YOUTH
Tiimes, where given, are approximate. Visit activities and timelines may vary from site to site.
1. Before your visit
Samples: Stool & urine
Samples: Stool & urine What?
Using special kits that you will be provided in advance, you will be asked to collect a stool (poo) sample seven days before your clinic visit, and a urine sample the morning of your visit.
Why?
To explore many things about you and your health, including your genetics, hormones, nutrition, microbiome (the community of microorganisms living in you), and metabolome (molecules involved in many chemical processes affecting how your cells function).
How long?
About 15 minutes.
Questionnaires
Questionnaires What?
You will be asked to complete various online forms. The questions asked will relate to such topics as: anxiety, depression and bullying; physical activity; sleep habits; media and technology use; risky behaviours (like smoking or vaping); and gender and body image.
Your answers will be strictly confidential.
Why?
To investigate the influence of these factors on your health and development.
How long?
As much time as you need, usually anywhere from 90 minutes to a few hours.
2. During your visit
Assent
Assent What?
CHILD staff will review a form with you, similar to what you signed at your 8- and 13-year visits. It will explain why we invited you for a visit this time and what information we plan to collect.
Why?
To make sure that you know your participation is voluntary, and that you know about and are comfortable with the visit activities and how CHILD will use your information.
How long?
As much time as you want, but it could be done in as little as about 3 minutes.
Body measurements
Body measurements What?
CHILD staff will take various body measurements: height; mid-arm, hip and waist size; arm and back skinfold. They will also use a scale to measure your weight and body composition (for example, the amount of lean muscle you have).
Why?
To track your overall growth and physical development over time.
How long?
About 10 minutes.
Blood pressure
Blood pressure What?
CHILD staff will use a monitor to test your blood pressure three times, with a one-minute break between each test.
The test involves wrapping a cuff around your upper arm, inflating it then measuring the flow of your blood through the arteries in your arm as it slowly deflates.
Why?
To track the health of your heart and vascular system (the vessels through which your blood flows).
How long?
About 7 minutes.
Pulse wave velocity
Pulse wave velocity What?
CHILD staff will measure how fast blood travels through your arteries as a result of your heart pumping. As you lie down and relax, staff will place a cuff around your leg and gently touch your neck with a flat wand.
Why?
To see how elastic and flexible your arteries are, which is a sign of the health of your cardiovascular system – your heart and the vessels through which your blood flows.
How long?
About 15 minutes.
Skin allergy
Skin allergy What?
CHILD staff will expose you to the same common allergens you’ve been exposed to in past visits, including cat, dog, mold, grass, weeds, trees, house dust, cow’s milk, egg white and peanut. CHILD staff will gently scratch a small amount of each into the skin of your forearm.
Why?
To check for signs of an immune reaction, like slight swelling or redness, which may mean that you are developing an allergic sensitivity.
How long?
About 15 minutes.
Lung: Spirometry
Lung: Spirometry What?
You will be asked to take a deep breath and then to blow into a plastic tube (a spirometer) a couple of times. Then you will be given 4 puffs of a common inhaler and be asked to do it again.
Why?
To check how open and clear your airways are, as a sign of your lung health.
How long?
About 20 minutes.
Lung: MBW (Toronto)
Lung: MBW (Toronto) What?
Multiple Breath Washout (MBW): You will breathe in and out through a special mouthpiece while a machine tracks how gas moves in and out of your lungs.
Why?
To see how well your lungs clear out air, which is important for detecting lung diseases.
How long?
About 30 minutes.
Lung: FOT (Toronto)
Lung: FOT (Toronto) What?
Forced Oscillatoin Technique (FOT): You will breathe normally through a mouthpiece while gentle sound waves (pressure waves) are sent into your airways to measure how easily air flows in and out.
Why?
To check if your airways are blocked or stiff.
How long?
About 20 minutes.
DXA scan
DXA scan What?
DXA (Dual-energy X-ray Absorptiometry) scan: You will lie still for a couple of minutes under a scanner that emits low-level X-rays.
Why?
To measure your bone density and body composition (fat, muscle, and bone mass), for insights into your bone health and overall fitness.
How long?
About 5 minutes?
Blood & mucus
Blood & mucus What?
At your clinic visit, staff will collect a sample from you of nasal (nose) mucus and blood or saliva.
Why?
To explore many things about you and your health, including your genetics, hormones, nutrition, microbiome (the community of microorganisms living in you), and metabolome (molecules involved in many chemical processes affecting how your cells function).
How long?
About 15 minutes.
3. After your visit
Wearables
Wearables What?
If you agree, you will use one or two pieces of wearable technology for a week: a GPS (global positioning) and/or an actigraphy (physical activity) device.
Why?
To gain insight into your sleep and physical activity patterns, as well as the environments you spend time in.
How long?
During your visit, staff will take a couple of minutes to explain these wearables. After your visit, you will wear any device that you agree to wear for seven days.
Nutrition tracking
Nutrition tracking What?
Use a mobile app for 3 days to track your food consumption.
Why?
To gain insight into your eating habits and how they might impact your health and development.
How long?
Your online questionnaires will describe this app and CHILD staff can answer questions about it at your visit. After your visit, you will use it for 3 days (a weekend and one weekday).
Thank you in advance for your continuing participation in CHILD!
The times given are approximate and visit activities and timelines may vary from site to site.
Consent (20 mins)
What?
CHILD staff will review with you a document that details the purpose of your and your child’s visit, the tests and questinonaires you will be asked to complete, and the way the resulting data will be used. You will be asked to confirm your agreement with the Study’s plans by signing the document.
Why?
We are doing this to ensure that you understand and agree with the way the Study will collect and use the data from your CHILD visit.
How long?
About 20 minutes.
Lung function (10 mins)
What?
If you did not perform this test at your last clinic visit, you will be asked to take a deep breath and then to blow hard and fast into a plastic tube (a spirometer).
Why?
To check how open and clear your airways are, as a sign of your lung health.
How long?
About 10 minutes.
Questionnaires (90 mins)
What?
On a series of forms, you will be asked to respond to various questions relating to such topics as: your child’s recent health and medication history; environmental factors at home and at your child’s school; your child’s eating and sleeping habits; your child’s overall metal health and well-being; household socio-economic status and stress levels; and your own health and activity levels.
Why?
To investigate the influence of these factors on your child’s health and development.
How long?
About 90 minutes.
Skin allergy (15 mins)
What?
CHILD staff will expose you to some common allergens (including cat, dog, mold, grass, weeds, trees, house dust, cow’s milk, egg white and peanut) by introducing a small amount of each into the skin of your forearm with a gentle pin prick.
Why?
To check for signs of an immune reaction, like slight swelling or redness, which may mean that you are developing an allergic sensitivity.
How long?
About 15 minutes.
Samples (15 mins)
What?
At your clinic visit, staff will collect biological samples from you of saliva and blood.
Why?
To explore many things about you and your health relevant to your child’s health, including your genetics, hormones, nutrition, and metabolome (molecules involved in many chemical processes affecting how your cells function).
How long?
About 15 minutes.
Paperwork (10 mins)
What?
At the end of your family’s clinic visit, staff will review what was accomplished and solicit your feedback on your visit experience.
Why?
To ensure your time was used well and nothing important was overlooked, and to identify ways of improving possible future clinic visits.
How long?
About 10 minutes.
Thank you in advance for your continuing participation in CHILD!