Data supplement 1

Supplementary File A. MEDLINE search strategy
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Asphyxia/
asphyxi*.tw
Airway obstruction/
Airway* adj4 obstruct*.tw
Brain Ischemia/
Brain ischemia.tw
exp Hypoxia, Brain/
Choking.tw
hypoxi*.tw
suffocat*.tw
strangulat*.tw
*Anoxia/
Anoxi*.tw
throttl*.tw
Hypocapnia/
hypocapni*.tw
Hyperventilation/
hyperventilat*.tw
syncop*.tw
Breath holding/
(breath adj2 hold*).tw.
(breath adj control).tw
(near adj hanging).tw
Or/ 1-23
choking game.af
fainting lark.af
mess trick.af
fainting game.af
riding a rocket.af
airplaning.af
American dream* game.af
Black out game.af
blackout game.af
bum rushing.af
california choke.af
California dreaming.af
California headrush.af
California high.af
california knockout.af
chok* out.af
cloud nine.af
cloud 9.af
dumbass game.af
dying game.af
flatlin* game.af
funky chicken.af
Harvey wallbanger.af
hyperventilation game.af
Indian headrush.af
knockout game.af
knock out game.af
pass out game.af
passout game.af
sleeper hold.af
space cowboy.af
space monkey.af
suffocation game.af
suffocation roulette.af
high riser.af
trip to heaven.af
rocket ride.af
speed dreaming.af
wall hit.af
purple dragon.af
five second high.af
5 minutes of heaven.af
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seven minutes til heaven.af
acupuncture game.af
sleeping game.af
tap out.af
tingling game.af
twitching game.af
take me down.af
les jeux de non-oxygenation.af
reve indien.af
reve bleu.af
jeu du foulard.af
navette spatiale.af
30 secondes de Bonheur.af
jeu de la grenouille.af
jeu du cosmos.af
jeu du poumon.af
jeu du coma.af
jeu de la serviette.af
jeu de la tomate.af
jeux dangereux.af
evanouissement.af
intent desmayo.af
juego de la asfixia.af
Tomatenspiel.af
Ohnmachtspiel.af
Wuergespiel.af
Ohnmaechterlis.af
Halstuchspiel.af
Bio-Kiffen.af
Pilotentest.af
Or/ 25-96
risk taking/
risk tak*.tw
risktak*.tw
risk* behavio?r.tw
recreation/
recreation.tw
accidents/
accident*.tw
Games, experimental/
game*.tw
self-injurious behavior/
Self-injur*.tw
self inflicted.tw
“play and playthings”/
Or/ 98-111
Infant/
Infan*.tw
child/
child, Preschool/
child*.tw
Adolescent/
adolesc*.tw
preadolesc*.tw
pre-adolesc*.tw
Young adult/
young adult.tw
teen*.tw
teenager*.tw
sibling*.tw
early life.tw
Youth/
young*.tw
youth*.tw
boy*.tw
girl*.tw
Juvenile*.tw
minors/
minor*.tw
Pe?diatri*.tw
pubert*.tw
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pubescen*.tw
pre-pubescen*.tw
prepubescen*.tw
prepube*.tw
pre-pube*.tw
puberty.tw
school*.tw
Primary school.tw
Elementary school.tw
Secondary school.tw
high school.tw
highschool.tw
pre-school*.tw
preschool*.tw
schoolchild*.tw
school child*.tw
Students/
student*.tw
undergrad*.tw
college.tw
campus*.tw
classroom*.tw
Or/114-159
24 and 112 and 160
161 or 97