Out of millions of American
divers, about 90 die each year. Yet
little is known about the precipitating
events for many of these
deaths. A coroner's report of
"drowning" tells us nothing about
what led to, or caused, a diver's
death. As Alfred Bove states,
"panic, or ineffective behavior in
the emergency situation when fear
is present, is the single biggest
killer of sport divers." Our study
examined the incidence of panic
while diving, the relationship to a
history of panic prior to diving,
and the results of panic during a dive. We defined a panic experience
as "an intense fear of losing
control or dying," which is often
accompanied by an urge to escape
or flee from wherever the attack is
occurring." An expected result of a
diver's panic attack would be a
rapid ascent or another flight
response.
The Incidence of Panic and
Prediving Panic
We received responses from
12,087 individuals: 76 percent
male and 24 percent female.
Similar percentages of males
(16 percent) and females (18 percent)
reported a history of panic
before they took up diving. But
significantly more females reported
panic experiences while diving
(37 percent versus 24 percent of
males). Forty-five percent of males
and 57 percent of females with a
history of panic before they began
diving reported panic during one
or more dives, compared with
only 19 percent of males and 33
percent of females without a prediving
panic history. This means that individuals with a prediving
history of panic are about twice as
likely to panic while diving compared
with those without.
Panic During and After Initial
Certification Training
Eleven percent of males with
prediving panic experienced their
first dive panic during training,
compared with four percent without
a history of panic. For females,
this percentage was higher: 21 percent
compared with 11 percent
without a prediving history of
panic. Thirty-four percent of males
with a prediving history of panic
had their first dive panic after their
initial training, compared with
only 16 percent without.
For females, the percentage
was 35 percent compared with 21
percent of those without a prediving
history of panic. For both
males and females, the average
number of dives during the year
before the first panic experience
during a dive was 11 to 25 dives,
suggesting that recent dive activity
made little difference. We found
no statistically significant difference
in the highest certification level
attained between divers with or
without panic during diving.
Prediving History of Panic and
Number of Panic Experiences
During Diving
A prediving history of panic
was also associated with having
multiple panic experiences during
diving. Thirty-eight percent of
males and 41 percent of females
with a prediving history of panic
reported more than one panic
experience while diving, compared
with only 25 percent of
males and 30 percent of females
without.
Diver's Perceptions and
Consequences of First Panic
Experience During a Dive
Males and females differed in
their perceptions and reactions to
their first panic during a dive.
While females were more likely to
panic during a dive (37 percent
versus 24 percent), more males
perceived their first panic during a
dive as life-threatening (37 percent
versus 27 percent). Most divers
who panicked reported remembering
from their training how to
deal with panic and used that
training (81 percent of males and 73 percent of females). More
females than males reported recognizing
offers of help during
their first dive panic experience
(67 percent versus 38 percent).
Fifteen percent of both males and
females made a rapid or uncontrolled
ascent during their first
panic while diving. But, within that
15 percent, only five percent of
males and four percent of females
reported symptoms of DCI, and
only one percent of males and two percent of females underwent
recompression.
What the Panic Survey Tells Us
About Diver Training
The data suggest that training
is largely effective and support current
training protocols. Panic arises
when individuals lack solutions
to a critical problem and most
respondents drew upon their training.
All divers benefit from repetitive
skill practice. The more familiar
divers are with skills the more
likely they are to respond appropriately
to panic. Repeated practice
in confined water, including
spontaneous drills, raises the
response availability level.
Females were almost twice as
likely to recognize help than
males. The data don't show why,
but cultural influence is a reasonable
speculation. Male self-reliance
is common in many cultures.
Asking for help may threaten male
self-image, or males may be conditioned
to not readily look for assistance.
Emphasizing diving as a
team activity may help make males
more receptive to external assistance
and may offset self-image
issues by asking for and accepting
help -- the characteristics of a
good diver.
The authors of this study are David F.
Colvard, M.D., and Lynn Y. Colvard, Ph.D. He is
a board-certified psychiatrist in private practice in Raleigh, N.C. He has been diving since 1971
and is an active divemaster. She is a research biochemist,
a medical writer for a clinical research
organization, and a certified diver. The paper
was first presented to the Annual Scientific
Meeting of the Undersea and Hyperbaric
Medical Society last year in La Jolla, CA, and
published in the Winter 2003 issue of the
Undersea Journal. Copies can be obtained by contacting
Dr. Colvard at dcolvard@pop.mindspring.com. This survey has limitations -- it was
not random, and it may tell us nothing about
divers who drop out or die. If panic dives led
many to drop out, then we must interpret this
survey's results conservatively. Second, the survey
was retrospective and subject to convenient
and favorable revision of memories by participants.
The data were self reported.