Mal de Debarquement Survey Results

There are a total of 978 answered surveys.

Vital Statistics
Gender	Female: 771 Male: 144
Age	Mean: 40.11 Median: 42 Std. Dev: 15.39 Minimum: 0.00 Maximum: 82.00 # of answers: 978

Onset of MDD
Currently Experiencing Symptoms	No: 84 Yes: 816
Duration (months)	Mean: 21.44 Median: 4 Std. Dev: 41.37 Minimum: -1.00 Maximum: 420.00 # of answers: 789
Past Episode	No: 426 Yes: 460
Number of past episodes	Mean: 2.28 Median: 0 Std. Dev: 8.24 Minimum: 0.00 Maximum: 99.00 # of answers: 978
Longest previous episode (months)	Mean: 13.37 Median: 4 Std. Dev: 27.70 Minimum: 0.00 Maximum: 246.00 # of answers: 442
Did you completely recover	No: 163 Yes: 308
Precipitating Event	Airplane Trip: 167 Boat/Cruise Trip: 482 Other: 162 Car/Bus Trip: 57 Train Trip: 16 Sleeping on a waterbed: 4
Was this your first such trip	No: 564 Yes: 263
Duration of this activity (days)	Mean: 6.78 Median: 4 Std. Dev: 34.89 Minimum: 0.00 Maximum: 800.00 # of answers: 781
Did you sleep during the activity	No: 266 Yes: 525
Were you taking motion sickness prevention drugs	No: 629 Yes: 177

Symptoms/Diagnosis
Symptoms	Anxiety: 378 Difficulty maintaining balance: 608 Concentration problems: 558 Depression: 289 Dizziness: 532 Ear pain: 174 Fatigue: 572 G-Force inside head: 295 Headaches: 270 Head tremors: 89 Memory problems: 373 General motion sensation: 753 Other...: 85 Rocking: 751 Spaced-out feeling: 577 Tilted vision: 130
Preexisting medical conditions	Cold: 98 Ear infection: 43 Unusual fatigue: 114 Nasal infection: 25 Other...: 110 Sinus infection: 101 Unusual stress: 238
Have you been officially diagnosed with MDD	No: 524 Yes: 369