Skip Standard Navigation Links
Centers for Disease Control and Prevention
 CDC Home Search Health Topics A-Z
peer-reviewed.gif (582 bytes)
eid_header.gif (2942 bytes)
Style Guide
 EID Home | Ahead of Print | Past Issues | EID Search | Contact Us | Announcements | Suggested Citation | Submit Manuscript

PDF/Printer Friendly
Table of Contents

A–Z Index

General Information

  •

Authorship

  •

Copyright

  •

Instructions to Authors

  •

Checklist
Specific Style Issues

  •

Abbreviations and Acronyms

  •

Affiliations

  •

Appendixes

  •

Capitalization

  •

Geographic Designations

  •

Numbers

  •

Preferred Usage

  •

Punctuation

  •

References

  •

Scientific Nomenclature

  •

Spelling

  •

Tables and Figures

  •

Units of Measure

  •

Verbs

Other Resources

  •

Comprehensive Style Guides & Other Resources
  •
Internet Resources

 


 
Style Guide for Authors and Editors (page 4 of 6)


Preferred Usage

affect, effect

affect (v), to influence
affect (n), subjective aspect of an emotion (psychological studies)
effect (v), to bring about or initiate
effect (n), result or outcome

Alaskan Native, Alaska native

Alaska native, anyone who was born and raised in Alaska, regardless of cultural background.

Alaskan Native, a person having origins in any of the original peoples of the area that is now Alaska, and who maintains cultural identification through tribal affiliation or community recognition

American Indians, Native Americans

Both terms are acceptable. [source: Indians Are Us? Culture and Genocide in Native North America by Ward Churchill, 1994] Native Americans is preferred.

among, between

"among" always applies to more than two objects.

"between" literally applies to only two objects but may be used with more than two when each is treated individually, as in "a treaty between three powers" (CBE).

and, or

Avoid. In most cases, either "and" or "or" is correct. When a choice cannot be made, use "X, Y, or both."

age designations
neonate or newborn birth to 1 month of age
infant 1 month to 2 years of age
child 2 to 13 years of age
school-age 5 to 18 years
teenage 13 to 19 years
adolescent 13 to 17 years of age
adult 18 years old and older
childbearing age 15 to 44 years old
elderly (follow author)

Note: 
Do not say "zero age."

based on, on the basis of

"based on" is often erroneously used to mean "on the basis of." Correctly used, it follows forms of the verb "to be."

The calculations were based on the following results.

biopsy

The procedure of removing and examining tissue, cells, or fluids from the living body. Observations are made on the biopsy specimen, not on the biopsy itself. Biopsy is a noun; do not use as a verb. (AMA)

black, African-American

Follow author, but "black" is not capitalized.

brevity

Use as few words as possible to make a point

the majority of most or many
prior to before
at the present time now
at the time that when
in terms of in, of, for
the truth is is
the facts are are
in order to to
burden

Avoid.

CDC

not "the CDC"

case, patient

A case is a particular instance of disease, illness, injury, or asymptomatic disease. Distinguish between a case (a situation or set of circumstances) and a patient (a human being). Cases do not show symptoms, experience side effects, recover, or die; patients do. Do not dehumanize persons into cases. ("Case-patient," however, is an acceptable term.)

Clostridium perfringens was isolated in a case of diarrhea or from a patient with diarrhea.

Erythromycin is recommended for treating patients with legionellosis.

commercial sex workers, prostitutes

Follow author.

compare to, with

One thing or person is usually compared with another when the aim is to examine similarities or differences in detail. A thing is compared to another when a single striking similarity (or dissimilarity) is observed, or when a thing of one class is likened to one of another class, without analysis (AMA). In most cases, use compare with.

compare with: to examine in detail so as to discover the similarities or differences

The sodium levels of the patients in the control group were compared with those of the patients in the study group.

compare to: to liken to (to point out comparison without the act of detailed analysis)

Shall I compare thee to a summer's day?

compose, comprise

compose: to total, form, to go together, to make up (an object)

The district is composed of three counties.

comprise: to include, to contain, to be made up of (do not say is comprised of)

The whole comprises the parts; the parts do not comprise the whole.
A district comprises three counties.

continual, continuous

Continual means to recur at regular and frequent intervals. Continuous means to go on without pause or interruption.

The patient with emphysema coughed continually.

His labored breathing was eased by a continuous flow of oxygen through a nasal cannula.

controls

Persons are used as controls.

dehumanizing terms

Describe a person as having a condition, not being the condition.

person with diabetes, not a diabetic
person with arthritis, not an arthritic
person with asthma, not an asthmatic
person with AIDS, not AIDS patient

develop

Diseases develop in patients. Patients do not develop diseases.

diagnose

To evaluate, identify

Conditions, syndromes, diseases, and pathogens are diagnosed. Patients are not diagnosed.

die of

Patients die of, not from specific diseases or disorders. (AMA)

different from

Use different from, not different than.

dosage, dose

Dosage implies a regimen; dose implies a quantity. (AMA)

dosage, the amount of medicine to be taken by a patient in a given period

dose, the amount taken at one time

due to, owing to

These terms are not synonymous. "Due to," an adjective, should be attached only to a noun or pronoun and should not be used in place of owing to, because of, on account of, which are compound prepositions. (WIT) A good rule of thumb is to use "due to" with forms of the verb "to be."

Her success is due to talent and hard work. ("Due to" follows a form of "to be" and modifies success.)

e.g. and i.e.

Place a comma after these abbreviations. Do not use "etc." in an e.g. or i.e. segment.

e.g. = for example, such as
i.e. = that is, in other words

Examples may be introduced by "e.g." but should not be followed by "e.g."

Correct: 
In evaluating an I.Q. score, several factors, e.g., socioeconomic level, must be considered.

Incorrect: 
Socioeconomic level, e.g., is a factor to be considered.


eliminate, eradicate

Disease is eradicated from the entire world, eliminated from a country or region.

epidemic, endemic

A disease is endemic in an area; the area is not endemic.

endemic malaria, disease-endemic areas

epidemic, a disease that occurs suddenly and in numbers in excess of what would be expected (because it was introduced from outside)

endemic, belonging or native to a particular people or country, indigenous

etc.

Do not use in scientific writing; it is considered vague.

etiology, cause

Etiology is the study or description of causes (agents) of a disease. Do not use "etiology" as a synonym for "cause." Etiology encompasses all the possible causes of a disease.

expire, die

Patients do not expire or have fatal outcomes; they die.

feel, believe

Use "feel" to express physical sensations; use "believe" to express personal conviction, accepting something as true.

The patient felt cold.
The author believed that the theory was sound.

fever, temperature

Fever is a rise of body temperature above normal. If a patient has a temperature of 37.8ºC, he has a fever of 0.8ºC.

Also correct: 
The patient was febrile (37.8ºC). (AMA)

Note: 
Please use the Times New Roman degree symbol; do not use a superscript lowercase "o."

few, less (fewer, less; fewest, least)

"Few" refers to units or people that can be counted.

"Less" refers to quantities of mass, bulk, or volume.

former Soviet Union

Refer to individual country. As a whole, refer to "Newly Independent States."

gram

Gram should be capitalized and never hyphenated when used as Gram stain. Gram negative and gram positive should be lower case and only be hyphenated when used as a unit modifier.

Gram staining
gram negative
gram-positive bacteria

homosexual, bisexual, gay

Follow author on these terms. Sometimes the phrase "men who have sex with men" is used because some of these men do not label themselves as gay, homosexual, or bisexual.

-ic versus -ical

Dispense with most -al endings. For example, use epidemiologic, geographic, serologic, logistic, immunologic, toxicologic, anatomic.

Author's preference, however, should be considered, e.g., biological warfare.

immunize, vaccinate

immunize, to confer immunity

vaccinate, to administer vaccine

in, among

Conditions usually occur in, not among, persons.

The 25 cases of measles were in school-aged children
infection in patients, not infection among patients

incidence, prevalence

incidence (a rate), number of new cases per unit of population per unit of time

prevalence, number of existing cases per unit of population at a given time (point prevalence) or in a given time (period prevalence).

individual, person

"Person" is a noun; "individual" is an adjective (e.g., an individual student).

influenza season

Influenza season should be written as follows:

2000–01

or

1999–2000

inject, inoculate

Inject a fluid; inoculate an animal or person. Liquid cannot be inoculated into an animal or a petri dish; it is injected into or spread on.

We used a 0.5-mL aliquot to inoculate each mouse.
We injected a 0.5-mL aliquot into each mouse.

injection, intravenous drug user(s)

Be aware of the difference between injection drug users (IDU) and intravenous drug users (IVDU). The former includes other forms of drug use such as intramuscular injection.

insure, ensure, assure

insure, to guarantee life or property against risk (e.g., to underwrite; to give, take, or procure insurance [CBE])

ensure, to make certain or guarantee (CBE)

assure, to make safe, to give confidence to (Webster)

in vitro

Do not hyphenate foreign phrases that are printed open in other circumstances (e.g., in vitro translation, in situ protein synthesis, in vitro-stimulated growth, in situ-synthesized proteins). ASM, p. 45

male, female

Both terms are adjectives. For nouns, use man, woman, boy, girl, or infant if possible.

molecular weight

The relative mass of a substance. It is a pure number and has no units.

Incorrect: 
The molecular weight of a protein is 30,000 Da.

Correct: 
The molecular weight of the protein is 30,000. (CBE)

Correct: 
The molecular mass . . . is 30,000 Da. (ASM)

morbidity, morbidity rate

morbidity, the condition of being diseased, the rate of illness or disease. "Illness" or "disease" is preferred over "morbidity"; avoid "morbidity rate."

mortality, mortality rate (AMA)

mortality, the number of deaths from a particular condition. "Death" is preferred over "mortality."

mortality rate, the number of deaths in a particular population divided by the size of that population at the same time.

negative, normal

Examinations and most laboratory tests are neither negative nor normal in and of themselves; interpretations of the tests, however, may be negative or normal.

Observations, results, or findings from examinations and tests are normal or abnormal.

Cultures, tests for microorganisms, tests for specific reactions, and reactions to tests may be negative or positive.

Electroencephalograms, electrocardiograms, isotope scans, and roentgenograms are "pictures" and are, therefore, normal or abnormal, not negative or positive. (AMA)

Urinalysis results were normal, not urinalysis was normal.

offspring

Use "children," not "offspring" for humans.

-ology

This suffix means "a branch of knowledge, science, or study of." Terms ending in -ology (e.g., etiology, pathology, serology) should not be used to describe particular items. (AMA)

Incorrect: 
The pathology was located in the upper part of the gastrointestinal tract.

Correct: 
The pathologic lesion was located in the upper part of the gastrointestinal tract.

Incorrect: 
The histology was small-cell carcinoma of the lung.

Correct: 
The histologic diagnosis was small-cell carcinoma of the lung.

Incorrect: 
The patient's serology showed . . .

Correct: 
The patient's serologic test results showed . . .

Incorrect: 
We used the following methodology.

Correct: 
We used the following methods.

parameter

Parameter has a specific statistical meaning and should not be used simply to mean measurement, value, or number. Ordinarily, except when a descriptive quantity for a statistical population is meant, parameter should be changed to measurement, value, quantity, variable, number, or a comparable term. (AMA)

parasitemia

Change to "levels of parasitemia."

patient

An ill person who is receiving or has received medical care. Do not use the term "normal patients."

person, persons, people

Person is preferred over "individual."

The plural of person is "persons," not "people." The latter term refers to a group of persons who share particular characteristics (e.g., the American people).

present, present with

Jargon.

Incorrect: 
The patient presented with . . .

Correct: 
The patient sought treatment for . . .

Correct: 
The patient had . . .

preventative, preventive

"Preventative" is becoming obsolete. "Preventive" is preferred.

react, test

A substance is tested for a reaction with another substance; it is not reacted with another substance.

redundant phrases

large in size - large
period of time - period
very unique - unique

resolve

Symptoms are resolved; patients do not resolve their symptoms.

risk of, for, from 

What is my risk of getting AIDS?
Men who have sex with other men are at highest risk for AIDS.
The most serious risk from AIDS is death.

sacrifice

A euphemism for killing laboratory animals after an experiment. Preferred terms are "humanely kill" or "euthanize."

serum, sera 

Serum and the names of other body fluids should not be singular if they mean samples collected from different patients. Change serum of patients to serum samples or serum specimens

Be sure to use the word samples or specimens if a specific number is given: 14 serum samples, not 14 sera.

If the plural form of serum is needed and the term is being used in a general sense and does not describe units that can be counted, sera can be used: for example, sera from four blood banks, pooled sera, antisera.

sex partners

not sexual partner
However, "sexual behavior" is a correct term.

significant

Significant has a specific statistical meaning. If that is not the meaning intended, substitute a synonym, e.g., important, marked, noteworthy, substantial.

subject

Substitute participant, patient, or person.

time designations

March to August (not inclusive)
March through August (inclusive)
1960s, not 1960's
once a day, not daily
twice a day, not twice daily
1986 to 1987 (1-year period)
1986 through 1987 (2-year period)
Avoid "between" (e.g., between 1986 and 1987)
2000–01 or 1999–2000

titer

A noun, not a verb.

Incorrect: 
were titered

Correct: 
titers of . . . were determined

tracking

Jargon.

Incorrect: 
tracking people

Correct: 
analyzing trends among persons . .

U.S. citizens

Is preferred over Americans.

varying, various

varying, that which is changing (adjective) or causing to change (verb)
various, of different kinds or aspects

youth in high-risk situations

to avoid categorization by group, do not use "high-risk youth." Similarly, replace "high-risk groups" with "groups at high risk."

   
     
  
Comments to the EID Editors
Please contact the EID Editors at eideditor@cdc.gov

 

EID Home | Top of Page | Ahead-of-Print | Past Issues | Suggested Citation | EID Search | Contact Us | Accessibility | Privacy Policy Notice | CDC Home | CDC Search | Health Topics A-Z

This page last reviewed June 30, 2003

Emerging Infectious Diseases Journal
National Center for Infectious Diseases
Centers for Disease Control and Prevention