Table 2.

CINAHL searched 1982 to April 2007

CINAHL
CINAHL searched via OVID 1982 to April 2007
1 autis$.tw.
2 PDD.tw.
3 pervasive developmental disorder$.tw.
4 (language adj3 delay$).tw.
5 communicat$.tw.
6 (speech adj3 disorder$).tw.
7 childhood schizophrenia.tw.
8 kanner$.tw.
9 asperg$.tw.
10 exp Autism/
11 exp COMMUNICATION/
12 or/1-11
13 exp GLUTEN/
14 (gluten$ or casein$).tw.
15 or/13-14
16 randomi$.mp. [mp=title, subject heading word, abstract, instrumentation]
17 clin$.mp. [mp=title, subject heading word, abstract, instrumentation]
18 trial$.mp. [mp=title, subject heading word, abstract, instrumentation]
19 (clin$ adj3 trial$).mp. [mp=title, subject heading word, abstract, instrumentation]
20 singl$.mp. [mp=title, subject heading word, abstract, instrumentation]
21 doubl$.mp. [mp=title, subject heading word, abstract, instrumentation]
22 tripl$.mp. [mp=title, subject heading word, abstract, instrumentation]
23 trebl$.mp. [mp=title, subject heading word, abstract, instrumentation]
24 mask$.mp. [mp=title, subject heading word, abstract, instrumentation]
25 blind$.mp. [mp=title, subject heading word, abstract, instrumentation]
26 (20 or 21 or 22 or 23) and (24 or 25)
27 crossover.mp. [mp=title, subject heading word, abstract, instrumentation]
28 random$.mp. [mp=title, subject heading word, abstract, instrumentation]
29 allocate$.mp. [mp=title, subject heading word, abstract, instrumentation]
30 assign$.mp. [mp=title, subject heading word, abstract, instrumentation]
31 (random$ adj3 (allocate$ or assign$)).mp.
32 Random Assignment/
33 exp Clinical Trials/
34 exp Meta Analysis/
35 31 or 27 or 26 or 19 or 16 or 32 or 33 or 34
36 12 and 15 and 35