What is your first name?
* must provide value
What is your last name?
* must provide value
Please provide the best phone number to contact you.
* must provide value
Please provide the best email address to reach you.
* must provide value
Which city do you currently live in?
* must provide value
What is your current ZIP Code?
* must provide value
Do you prefer to be contacted via phone or email?
* must provide value
Phone
Email
Do you have a mobile phone that you can use on a daily basis?
Our study will require you to take photos of everything you eat and drink.
* must provide value
Yes
No
Do you have WiFi at your home?
* must provide value
Yes
No
Do you have a data plan on your mobile phone?
* must provide value
Yes
No
This study requires that you send daily photos of all of your caloric intake and you indicated that you did not have a data plan.
Would you be willing to work with our team to find an adequate solution to offset additional costs that would incur from participating in this study?
Examples include buying a data plan for the month of your participation, or providing detailed records of all study-related telecommunication costs, for us to reimburse study-specific costs.
* must provide value
Yes
No
What is your date of birth?
* must provide value
Today Y-M-D year-month-day
View equation
What race(s) do you identify as?
* must provide value
What race do you identify as (Other)?
What ethnicity do you identify as?
* must provide value
Hispanic or Latino
Not Hispanic or Latino
What is your biological sex?
* must provide value
Male
Female
Are you currently pregnant?
* must provide value
Yes
No
Are you currently breast-feeding?
* must provide value
Yes
No
Are you a new parent with a child under one year old in the household?
* must provide value
Yes
No
Did you regularly have your period in the past year?
* must provide value
Yes
No
What is your approximate cycle length?
* must provide value
< 21 days
21-23 days
24-26 days
27-29 days
29-31 days
31-35 days
>35 days
Irregular/Can't say
Do any of the following reasons explain why your period was irregular?
* must provide value
I have a hormonal IUD
I am/was pregnant
I am/was breast feeding
I changed my hormonal contraceptive method
Other
Please describe why your period was irregular for "Other."
* must provide value
Do you use hormonal contraception?
* must provide value
Yes
No
Please indicate your method of contraception:
* must provide value
Implant
IUD
Injections
Pill
Vaginal ring
Skin patch
Other
Please describe what method of contraception you use for "Other."
* must provide value
What is your height in inches?
* must provide value
What is your weight in pounds?
* must provide value
View equation
On average, how many alcoholic drinks do you have per week?
* must provide value
Less than 7
More than 7
On average, how many alcoholic drinks do you have per week?
* must provide value
Less than 14
More than 14
Do you currently take any of the following medications regularly? Check as many as apply
* must provide value
Please describe any other medications you take regularly. Write "None" if you don't take any other medications regularly.
* must provide value
Have you ever been diagnosed with a chronic disease, such as type 1 or 2 diabetes, Crohn's disease, cardiovascular disease (such as heart attacks and strokes), or cancer (other than non-melanoma skin cancer)?
* must provide value
Yes
No
Please specify what chronic disease you have been diagnosed with.
* must provide value
Have you ever been diagnosed with any psychiatric or neurological disorder, such as depression, bipolar disorder, schizophrenia, an eating disorder, epilepsy, or Parkinson's disease?
* must provide value
Yes
No
Please specify what psychiatric or neurological disorder you have been diagnosed with.
* must provide value
Have you ever been diagnosed with any sleep disorder, such as restless leg syndrome, insomnia, narcolepsy, or sleep apnea?
* must provide value
Yes
No
Please specify what sleeping disorder you have been diagnosed with.
* must provide value
What is your usual daytime awakening?
* must provide value
Now H:M Military time (add 12 hours if after noon, e.g., 2:00pm is 14:00)
Do you have trouble falling asleep?
* must provide value
No, not in the past 4 weeks
Yes, less than once a week
Yes, 1 or 2 times a week
Yes, 3 or 4 times a week
5 or more times a week
Do you wake up several times a night?
* must provide value
No, not in the past 4 weeks
Yes, less than once a week
Yes, 1 or 2 times a week
Yes, 3 or 4 times a week
5 or more times a week
Do you wake up earlier than you planned to?
* must provide value
No, not in the past 4 weeks
Yes, less than once a week
Yes, 1 or 2 times a week
Yes, 3 or 4 times a week
5 or more times a week
Do you have trouble getting back to sleep after you wake up too early?
* must provide value
No, not in the past 4 weeks
Yes, less than once a week
Yes, 1 or 2 times a week
Yes, 3 or 4 times a week
5 or more times a week
Overall, was your typical night's sleep during the past 4 weeks:
* must provide value
Very sound or restful
Sound or restful
Average quality
Restless
Very restless
Are you currently employed?
* must provide value
Yes
No
How many hours a week do you typically work in your primary job?
* must provide value
< 20 hours per week
20-34 hours per week
35 hours per week or more
What industry are you working in?
* must provide value
Healthcare
Service
Transportation
Manufacturing
Construction
Energy sector
Other
Industry (other)
* must provide value
What is your current job title?
* must provide value
Do you have contact with patients in the course of your work?
* must provide value
Yes
No
Does your schedule include any night shifts?
* must provide value
Yes
No
How many night shifts (at least 3 hours of work between midnight and 6am) do you on average work per month?
* must provide value
None
1-3
4-6
>6
number of night shifts per month
What other shifts do you work in addition to night shifts? Select as many as apply.
* must provide value
For how many years have you worked this schedule?
* must provide value
less than 2 2-5 5-10 more than 10
years
In the past two weeks, have you had close contact with a person who is LABORATORY CONFIRMED as COVID-19 positive?
Close contact as defined by CDC as:
Being within approximately 6 feet of a COVID-19 patient for a prolonged period of time (more than 5 minutes).
Having direct contact with infectious secretions of a COVID-19 case (e.g. being coughed on).
* must provide value
Yes
No
Do you smoke cigarettes regularly?
* must provide value
Yes
No
On average, how many cigarettes do you smoke per week?
* must provide value
≤ 2 cigarettes/week
>2 cigarettes/week
Do you smoke marijuana regularly?
* must provide value
Yes
No
How many days per week do you smoke marijuana?
* must provide value
1
2
3
4
5
6
7
Do you regularly use controlled substances such as cocaine, heroin, LSD, MDMA, or methamphetamine?
* must provide value
Yes
No
Are you planning to travel farther than 50 miles from your home, or to go to the mountains within the next two weeks?
* must provide value
Yes
No
If yes, we would like to accommodate scheduling for your participation
During the past week, I was bothered by things that don't usually bother me.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I had trouble keeping my mind on what I was doing.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I felt depressed.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I felt everything I did was an effort.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I felt hopeful about the future.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I felt fearful.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, my sleep was restless.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I was happy.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I felt lonely.
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
During the past week, I could not get "going".
* must provide value
Rarely or none of the time (less than 1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5-7 days)
This study involves a total of two in-person visits across a 14-day period. The first visit will last 6 hours, and the second visit will last about 1 hour. For each visit, you'll meet with study staff at both the CU Boulder Clinical Translational Research Center (CTRC) and the Circadian and Sleep Epidemiology Lab (CASELab) which are in the same building on the CU Boulder Main campus. Note that we adhere to all university, state, and CDC health and safety protocols to limit the spread of COVID-19. Prior to access buildings, we will take your temperature, and query COVID-19 symptoms. You will also be asked to wear a mask on campus.
Before your first visit, you will be emailed a consent form for you to sign with Docusign. You'll also have the opportunity to ask a staff member about the study. During your first visit, clinical staff will be measuring your height, weight, heart rate, and blood pressure. You will also receive a medical history and physical exam, blood draw and, if female, a pregnancy test. In addition, you'll receive two DXAs scan, which are like an x-ray that measures whole body fat and soft lean tissue mass. Clinical staff will also take a baseline urine sample, and you'll receive a dose of doubly-labeled water (DLW). Four and five hours later, on that same day, we will take two additional urine samples. On day 8 and 14 of the study, you will be asked to take two urine samples again, at the same times as you provided them at your initial study visit after drinking the DLW dose. Together, these samples will allow us to estimate your body's total daily and physical activity energy expenditure.
If you are eligible to participate in the study and are still interested, we will provide you with an Actiwatch (an activity monitor like a FitBit) to track your movement and sleep for 14 consecutive days. You will be equipped with an an activPAL micro sensor, affixed to your upper thigh, to track active and sedentary behavior. You will also receive a light monitor to wear around your neck. In addition, you will be equipped with a continuous glucose monitor (CGM), a blood sugar monitor that is applied on the back of your upper arm. The sensor has a small, flexible tip that is inserted just under the skin. We will also assist you in downloading and installing a mobile application on your phone that you will use for logging of daily meal timing, caloric intake, fasting times, and work hours. You'll be expected to wear the three monitors for the entire duration of these 14 days, and we ask you to use the app continuously throughout the study period. We'll also give you a log sheet to track your sleep, work hours, and sensor removal.
We'll also ask you to fill out a few lifestyle questionnaires which we'll assist you with in the CASELab.
During the second visit (last visit), you'll again visit the CTRC to receive two DXA scans, have a blood draw to look at glucose and insulin, remove your continuous glucose monitor, and return all sensors. You will be sent an email link to fill out an exit questionnaire.
Are you still interested in participating in the study?
* must provide value
Yes
No
We would like to keep your contact information on file so we can notify you if we have future research studies we think you may be interested in. This information will be used by only the principal investigator of this study and only for this purpose. The database will only be accessible to Dr. Vetter, and dedicated investigative research personnel. Access will be password-protected. No link to study data will be available, as the only available hardcopy of the key to do so will be stored separately in a locked room, in a locked file cabinet, only available to Dr. Vetter.
* must provide value
Yes, you may contact me for future research studies.
No, you may not contact me for future research studies.
Do you prefer to be re-contacted using the email or phone number specified above?
Email
Phone
How did you find out about this study?
* must provide value
Facebook Ad
Craigslist Ad
Professional Newsletter
Flyer
Family Member, Friend, or Acquaintance
Company email
Buff bulletin (CU Boulder today)
IPHY website
Vetterlab.com website
CASEL recruitment email
Instagram
LinkedIn
Other
Please specify which newsletter:
Please specify where you saw the flyer:
Please specify how you found out about the study:
View equation
View equation
View equation
Exclude if ≥ 0
View equation
Exclude if ≥ 0
View equation
Include: BMI ≥ 18.5 and < 30 kg/m2
menstrual_cycle_eligibility
REVIEW FOR FEMALES - SCORE SHOULD BE 0 TO BE ELIGIBLE
View equation
Exclude if ≥ 0
View equation
Exclude if ≥ 0
View equation
Exclude if ≥ 0
total_eligibility
DOESN'T INCLUDE MENSTRUAL CYCLE ELIGIBILITY (CHECK SCORE FOR FEMALES)
Exclude if ≥ 0
View equation
Exclude if ≥ 0