A computerized analysis of 2,144 questionnaires correlated the relationships between 40 variables and yielded 700 frequency tables. Of the 2,144 individuals in the psoriasis sample, 45% were male and 55% female. The mean age at onset of the disease was 27.3 years.
Scalp, elbows, and lower extremities were most commonly reported as areas affected at onset. Warm weather and sunlight had a beneficial effect.
The relationship between psoriasis and various diseases (arthritis, asthma, throat infection, diabetes) were studied. Remission of psoriasis had been experienced by approximately 40% of the males and 60% of the females.
Farber EM, Bright RD, Nall ML. PsoriasisA Questionnaire Survey of 2,144 Patients. Arch Dermatol. 1968;98(3):248–259. doi:10.1001/archderm.1968.01610150034005
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