The Bulimia Guide Search supports the use of the Boolean operators grouping characters and wildcard/truncation symbols
The Boolean operator "AND" narrows a search, retrieving only those records containing at least one term from each concept. The AND operator is very good for narrowing a search to retrieve those records most relevant to your topic.
The Boolean operator OR broadens a search, retrieving all records containing at least one of the search concepts entered, but not necessarily both. The OR operator is very good for linking synonyms or related concepts in order to retrieve as many relevant records as possible.
You can also use parentheses to construct your search strategies.
For example: entering the search expression -- (hip or knee) and arthroplasty -- will retrieve those records containing the terms hip and arthroplasty or the terms knee and arthroplasty
You can find plural forms of words or word-stems using the '*'. Asterisks can be placed at the start of a term or at the end or a term.
SEARCHING WITH PHRASES
The use of double quotation marks around your search phrase (e.g., "prostate cancer screening") is recommended if you would like to narrow your search to find records that contain the specific phrase. This search is more likely to retrieve content specifically related to your search expression.
SEARCHING WITH MULTIPLE PHRASES AND/OR BOOLEAN OPERATORS
The use of double quotation marks is required for complex searches that include multiple phrases and/or Boolean operators, parenthetical grouping, or wildcard/truncation characters. For instance, when your search query contains an operator, you must enclose any multi-word phrase in double-quotation marks. Take for example the following search expression:
Aspirin AND "Cardiovascular Disease" AND (Mortality OR "Death*")
Note the use of double quotation marks around the phrase "Cardiovascular disease" and around the wildcard/truncation for "Death*"
Boolean Search Examples
The following table presents a number of tips for specifying text search criterion expressions. Please note that you may enter your search criterion expressions in either uppercase or lowercase letters. References to the specified text in Bulimia Guide content will be found regardless of their case.
| To find HTAIS content that contain… || … enter the following as the search criterion expression: || Example search criterion expression: || Search via example expression finds reports that contain… |
|a specific word ||the word ||polysomnography ||the word "polysomnography" |
|a word that starts with a specific segment ||the segment followed by an asterisk ||transplant* ||any word starting with "transplant" (e.g., "transplant", "transplants", "transplantation") |
|a specific phrase ||the phrase ||Pap smear ||the term "Pap smear" |
|a number of specific words in any order ||the words separated by the Boolean operator "AND" ||prostate and cancer ||both words "prostate" and "cancer" in any order |
|at least one of a number of alternative words ||the words separated by the Boolean operator "OR" ||cancer or carcinoma or sarcoma or malignan* ||one or more of the following words: "cancer", "carcinoma", "sarcoma", any word that starts with "malignan" |
|a specific word in the absence of another word ||the specific word followed by the Boolean operators "AND NOT" and the word that should not be present ||coronary and not angioplasty ||the word "coronary" and not the word "angioplasty" |
|a combination of a specific word and at least one of a number of other words ||the specific required word followed by the Boolean operator "AND" and a parentheses-enclosed expression for the "other" words ||breast and (cancer or carcinoma) ||the word "breast" and either of the words "cancer" or "carcinoma" |
|at least one of a number of alternative words in combination with at least one of a number of other alternative words ||two parentheses-enclosed expressions for the alternative word lists separated by the Boolean operator "AND" ||(hepatic or liver) and (cancer or carcinoma) ||either of the words "hepatic" or "liver" in addition to either of the words "cancer" or "carcinoma" |
|two specific words in proximity to each other ||the words separated by the proximity operator "NEAR" ||fibroblast near diabetic ||both words "fibroblast" and "diabetic" in any order, however the nearer the words are to each other, the higher the report titles appear in the generated topic list |
Please note that when a search criterion expression includes both Boolean operators "AND" and "OR", parentheses must be used to establish the order in which the expression components are evaluated. Parentheses must also be used when the expression includes the Boolean operator "NOT" followed by a phrase containing "AND" or "OR". Expression segments in parentheses are evaluated before the rest of the search criterion expression. Omitting the parentheses will likely result in the omission of desired reports from the search results.
Additional Tips for Searching Bulimia Guide by Text
Please be aware of the following search features:
You cannot search for the words "AND","OR", and "NOT" because these words are seen as Boolean operators.
You cannot search for the word "NEAR" because this word is seen as a proximity operator.
You cannot search for prepositions, articles, single digits, or other words on the following "noise word" list, because such words are ignored.
| about |
| by |
| himself |
| now |
| that |
| well |
a b c d e f
g h i j k l
m n o p q
r s t u v w
x y z
1 2 3 4 5
6 7 8 9 0
Thus the following expressions are evaluated identically:
treatment of breast cancer
treatment breast cancer
When "noise words" are included in search phrases, they act as placeholders for any ignored word(s). For example, the expression "treatment of breast cancer" would match text strings "treatment for breast cancer" and "treatment and breast cancer".
Punctuation marks such as the period (.), colon (:), semicolon (;), and comma (,) are treated as word breaks and are otherwise ignored during a search.
To search for a word or phrase that includes a special character such as an ampersand (&), pound sign (#), dollar sign ($) or parentheses (), you must enclose the word or phrase in quotation marks.
To search for a word or phrase that contains quotation marks, you must double the quotation marks where they appear in the word or phrase, then enclose the word or phrase in quotation marks. For example, """bridge"" technology" will match the following phrase: "bridge" technology.
If you experience problems, contact ECRI Institute.