Study type:
Epidemiological study
(observational study)
Cellular phones: are they detrimental?
epidem.
By:
Salama OE, Abou El Naga RM
Published in: J Egypt Public Health Assoc 2004; 79 (3-4): 197-223
Aim of study (acc. to author)
Endpoint/type of risk estimation
Exposure
Assessment
Exposure groups
|
Group
|
Description
|
|
Group 1
|
mobile phone use: no
|
|
Group 2
|
mobile phone use: yes
|
Population
-
Group:
-
Age:
20–60 years
-
Characteristics:
teaching staff, students, and literate employees
-
Observation period:
not stated
-
Study location:
Egypt (5 faculties of Alexandria University)
-
Exclusion criteria:
past history of chronic headache, migraine, hypertension, ear or skin diseases in the face
Study size
| Type |
Value |
| Total |
300 |
| Evaluable |
267 |
Statistical analysis method:
- logistic regression
- Chi-square test
Results (acc. to author)
193 out of 267 participants (72.3 %) used a mobile phone. 140 of the mobile phone users (72.5 %) reported adverse health symptoms. The main symptoms were headache (43 %), earache (38.3 %), sense of fatigue (31.6 %), sleep disturbance (29.5 %), concentration difficulty (28.5 %) and face burning sensation (19.2 %). The authors recommended to restrict the call duration to four minutes and to make less than seven calls/day with total duration of exposure less than 22 min/day.
Study funded by
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