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Protocol - Caffeine Intake

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Protocol Name from Source:

Fred Hutchinson Cancer Research Center, Caffeine Questionnaire, 2004

Availability:

Publicly available

Description:

These self-administered questions can be used to inquire about the frequency of an individual’s consumption of beverages containing caffeine. Various time frames, ranging from once per month to six or more times per day, are arrayed on the response card for the respondent to use in assessing caffeine intake. The protocol also includes scoring procedures to convert an individual’s responses to an estimate of caffeine intake in milligrams.

Protocol:

Supplemental Beverage Questions

HOW OFTEN DID YOU DRINK THE BEVERAGE? (MARK ONE)

AMOUNT

Never or less than once per month

1 - 3 per month

1 per week

2 - 4 per week

5 - 6 per week

1 per day

2 - 3 per day

4 - 5 per day

6+ per day

Medium serving Size

Your Serving Size

S

M

L

Decaffeinated coffee (Instant & brewed)

О

О

О

О

О

О

О

О

О

1 Cup (8 oz)

О

О

О

Instant coffee, not decaffeinated (Including flavored types)

О

О

О

О

О

О

О

О

О

1 Cup (8 oz)

О

О

О

Brewed coffee, not decaffeinated

О

О

О

О

О

О

О

О

О

1 Cup (8 oz)

О

О

О

Decaffeinated espresso and espresso drinks (Latte, Mocha, Americano)

О

О

О

О

О

О

О

О

О

1 Shot of espresso

О

О

О

Espresso and espresso drinks, not decaffeinated (Latte, Mocha, Americano)

О

О

О

О

О

О

О

О

О

1 Shot of espresso

О

О

О

Herbal or decaffeinated tea (Instant, bottled, and brewed)

О

О

О

О

О

О

О

О

О

1 Cup (8 oz)

О

О

О

Green tea (Not decaffeinated-instant, bottled, and brewed)

О

О

О

О

О

О

О

О

О

1 Cup (8 oz)

О

О

О

Black tea such as Lipton®, or Earl Grey (Not decaffeinated-instant, bottled, and brewed)

О

О

О

О

О

О

О

Ο

О

1 Cup (8 oz)

О

О

О

Jolt®, Surge®, Mountain Dew®, Red Bull® and other highly caffeinated sodas

О

О

О

О

О

О

О

О

О

1 Can (12 oz)

О

О

О

Regular colas and root beer (With caffeine, not diet)

О

О

О

Ο

О

Ο

Ο

О

О

1 Can (12 oz)

О

О

О

Diet colas and diet root beer (With caffeine)

О

О

О

О

О

О

О

О

О

1 Can (12 oz)

О

О

О

Regular colas and root beer (Caffeine free, not diet)

О

О

О

О

О

О

О

О

О

1 Can (12 oz)

О

О

О

Diet colas and diet root beer (Caffeine free)

О

О

О

О

О

О

О

О

О

1 Can (12 oz)

О

О

О

Scoring Procedure: The first phase of processing is to calculate the number of annual servings for each Beverage Questionnaire item. This is done by multiplying the reported frequency by the reported portion size. For example, a participant reporting a frequency of 5-6 per week and a portion size of Large for the beverage item "Espresso and espresso drinks, not decaffeinated" would be assigned 414 annual servings of "Espresso and espresso drinks, not decaffeinated." That represents 276 annual servings for 5-6 per week (see Table 1 for beverage frequencies) multiplied by 1.5 for Large (see Table 2 for portion size below).

Table 1. Formats for beverage frequencies

Code

Label

Serving Ratio

1

1 per week

52

2

2 to 4 per week

144

3

5 to 6 per week

276

4

1 per day

365

5

2 to 3 per day

852

6

4 to 5 per day

1,560

7

6+ per day

2,190

Table 2. Formats for beverage portion size

Code

Label

Serving Ratio

1

S

0.5

2

M

1.0

3

L

1.5

Caffeine Database The second phase of processing involves calculating annual caffeine consumed. For each beverage item the annual servings are multiplied by the single serving caffeine data for that food item, which is found in the caffeine database. Each record in the caffeine database represents the caffeine content of a single serving of a single food item. For example, when calculating annual caffeine consumed for "Espresso and espresso drinks, not decaffeinated," the caffeine value is multiplied by the annual servings for "Espresso and espresso drinks, not decaffeinated" (arrived at in the first phase), and divided by 365, resulting in the average daily intake of caffeine for "Espresso and espresso drinks, not decaffeinated."

Beverage Item

Amount

Caffeine (mg)

Decaffeinated coffee (instant & brewed)

1 cup

2.51

Instant coffee, not decaffeinated (including flavored types)

1 cup

75.41

Brewed coffee, not decaffeinated

1 cup

137.34

Decaffeinated espresso and espresso drinks

1.5 oz or 1 shot of espresso

0.73

Espresso and espresso drinks (Latte, Mocha, Americano)

1.5 oz. or 1 shot of espresso

51.50

Herbal or decaffeinated tea (Instant, bottled, and brewed)

1 cup

0

Green tea (Not decaffeinated-instant, bottled, and brewed)

1 cup

47.36

Black tea such as Lipton®, or Early Grey (Not decaffeinated-instant, bottled, and brewed)

1 cup

37.80

Jolt®, Surge®, Mountain Dew®, Red Bull® and other highly caffeinated sodas

1 can, 12 fl.Oz.

71.68

Regular colas and root beer (With caffeine, not diet)

1 can, 12 fl.Oz.

37.16

Diet colas and diet root beer (With caffeine)

1 can, 12 fl.Oz.

49.73

Regular colas and root beer (Caffeine free, not diet)

1 can, 12 fl.Oz.

0

Diet colas and diet root beer (Caffeine free)

1 can, 12 fl.OZ

0

Lipton® is a registered trademark, Unilever United States, Inc.; Jolt® is a registered trademark, Wet Planet Beverages; Surge® is a registered trademark, The Coca-Cola Company; Mountain Dew® is a registered trademark, PepsiCo, Inc.; Red Bull® is a registered trademark, Red Bull GmbH.


Personnel and Training Required

None

Equipment Needs

None

Requirements

Requirement CategoryRequired
Average time of greater than 15 minutes in an unaffected individualNo
Major equipmentNo
Specialized requirements for biospecimen collectionNo
Specialized trainingNo

Mode of Administration

Self-administered

Life Stage:

Adult, Senior

Specific Instructions:

None

Research Domain Information

Release Date:

October 1, 2015

Definition

A measure to estimate an individual’s caffeine intake.

Purpose

There are functional and health effects associated with caffeine consumption. Some of these effects include promoting enhanced energy expenditure for weight loss, slowing early memory loss, keeping alert, and preventing fatigue. Epidemiological and experimental studies have shown positive effects associated with caffeine consumption, especially from regular coffee drinking, on various aspects of health, such as psychoactive responses (alertness, mood change), neurological (infant hyperactivity, Alzheimer’s and Parkinson’s diseases) and metabolic disorders (diabetes, gallstones, liver cirrhosis), and gonad and liver function.

Selection Rationale

The Working Group felt it was important to include a protocol to measure caffeine intake and specific sources due to the increased consumption of caffeinated beverages.

Language

English

Standards

StandardNameIDSource
Common Data Elements (CDE)Person Caffeine Intake Value in Milligram2944784CDE Browser
Logical Observation Identifiers Names and Codes (LOINC)PhenX - caffeine protocol62280-3LOINC

Process and Review

The [link[phenx.org/node/62|Expert Review Panel #1]] reviewed the measures in the Anthropometrics, Diabetes, Physical Activity and Physical Fitness, and Nutrition and Dietary Supplements domains.

Guidance from the ERP includes:

• No significant changes to measure

Back-compatible: no changes to Data Dictionary

Previous version in Toolkit archive ([link[www.phenxtoolkit.org/index.php?pageLink=browse.archive.protocols&id=50000|link]])

Source

Fred Hutchinson Cancer Research Center. (2004). Caffeine questionnaire. Retrieved from http://sharedresources.fhcrc.org/documents/caffeine-questionnaire

General References

Song, J. Y., Kristal, A. R., Wicklund, K. G., Cushing-Haugen, K. L., & Rossing, M. (2008). Coffee, tea, colas, and risk of epithelial ovarian cancer. Cancer Epidemiology Biomarkers and Prevention, 17(3), 712-716.

Drea, J., & da Costa, T. (2005). Is coffee a functional food? British Journal of Nutrition, 93(6), 773-782.

Protocol ID:

50301

Variables:

Export Variables
Variable NameVariable IDVariable DescriptionVersiondbGaP Mapping
PX050301_Decaf_Coffee_FrequencyPX050301010100HOW OFTEN DID YOU DRINK Decaffeinated coffee (Instant & brewed)? (MARK ONE)4N/A
PX050301_Decaf_Coffee_QuantityPX050301010200What is your serving size for Decaffeinated coffee (Instant & brewed)?4N/A
PX050301_Instant_Coffee_FrequencyPX050301020100HOW OFTEN DID YOU DRINK Instant coffee, not decaffeinated (Including flavored types)? (MARK ONE)4N/A
PX050301_Instant_Coffee_QuantityPX050301020200What is your serving size for Instant coffee, not decaffeinated (Including flavored types)?4N/A
PX050301_Brewed_Coffee_FrequencyPX050301030100HOW OFTEN DID YOU DRINK Brewed coffee, not decaffeinated? (MARK ONE)4N/A
PX050301_Brewed_Coffee_QuantityPX050301030200What is your serving size for Brewed coffee, not decaffeinated?4N/A
PX050301_Decaf_Espresso_FrequencyPX050301040100HOW OFTEN DID YOU DRINK Decaffeinated espresso and espresso drinks (Latte, Mocha, Americano)? (MARK ONE)4N/A
PX050301_Decaf_Espresso_QuantityPX050301040200What is your serving size for Decaffeinated espresso and espresso drinks (Latte, Mocha, Americano)?4N/A
PX050301_Espresso_FrequencyPX050301050100HOW OFTEN DID YOU DRINK Espresso and espresso drinks, not decaffeinated (Latte, Mocha, Americano)? (MARK ONE)4N/A
PX050301_Espresso_QuantityPX050301050200What is your serving size for Espresso and espresso drinks, not decaffeinated (Latte, Mocha, Americano)?4N/A
PX050301_Decaf_Tea_FrequencyPX050301060100HOW OFTEN DID YOU DRINK Herbal or decaffeinated tea (Instant, bottled, and brewed)? (MARK ONE)4N/A
PX050301_Decaf_Tea_QuantityPX050301060200What is your serving size for Herbal or decaffeinated tea (Instant, bottled, and brewed)?4N/A
PX050301_Green_Tea_FrequencyPX050301070100HOW OFTEN DID YOU DRINK Green tea (Not decaffeinated-instant, bottled, and brewed)? (MARK ONE)4N/A
PX050301_Green_Tea_QuantityPX050301070200What is your serving size for Green tea (Not decaffeinated-instant, bottled, and brewed)?4N/A
PX050301_Black_Tea_FrequencyPX050301080100HOW OFTEN DID YOU DRINK Black tea such as Lipton, or Earl Grey (Not decaffeinated-instant, bottled, and brewed)? (MARK ONE)4N/A
PX050301_High_Caffeine_Soda_FrequencyPX050301090100HOW OFTEN DID YOU DRINK Jolt, Surge, Mountain Dew, Red Bull and other highly caffeinated sodas? (MARK ONE)4N/A
PX050301_High_Caffeine_Soda_QuantityPX050301090200What is your serving size for Jolt, Surge, Mountain Dew, Red Bull and other highly caffeinated sodas?4N/A
PX050301_Regular_Cola_FrequencyPX050301100100HOW OFTEN DID YOU DRINK Regular colas and root beer (With caffeine, not diet)? (MARK ONE)4N/A
PX050301_Regular_Cola_QuantityPX050301100200What is your serving size for Regular colas and root beer (With caffeine, not diet)?4N/A
PX050301_Diet_Cola_FrequencyPX050301110100HOW OFTEN DID YOU DRINK Diet colas and diet root beer (With caffeine)? (MARK ONE)4N/A
PX050301_Diet_Cola_QuantityPX050301110200What is your serving size for Diet colas and diet root beer (With caffeine)?4N/A
PX050301_Regular_Cola_Caffeine_Free_FrequencyPX050301120100HOW OFTEN DID YOU DRINK Regular colas and root beer (Caffeine free, not diet)? (MARK ONE)4N/A
PX050301_Regular_Cola_Caffeine_Free_QuantityPX050301120200What is your serving size for Regular colas and root beer (Caffeine free, not diet)?4N/A
PX050301_Diet_Cola_Caffeine_Free_FrequencyPX050301130100HOW OFTEN DID YOU DRINK Diet colas and diet root beer (Caffeine free)? (MARK ONE)4N/A
PX050301_Diet_Cola_Caffeine_Free_QuantityPX050301130200What is your serving size for Diet colas and diet root beer (Caffeine free)?4N/A
PX050301_Black_Tea_QuantityPX050301080200What is your serving size for Black tea such as Lipton, or Earl Grey (Not decaffeinated-instant, bottled, and brewed)?4N/A