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Risk factors for work-related sympto...

Mendell, Mark Judson.

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Risk factors for work-related symptoms in northern California office workers.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Risk factors for work-related symptoms in northern California office workers./
Author:	Mendell, Mark Judson.
Description:	121 p.
Notes:	Chair: Allan H. Smith.
Contained By:	Dissertation Abstracts International53-05B.
Subject:	Health Sciences, Occupational Health and Safety. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9228770

Risk factors for work-related symptoms in northern California office workers.
Mendell, Mark Judson.

Risk factors for work-related symptoms in northern California office workers. - 121 p.

Chair: Allan H. Smith.

Thesis (Ph.D.)--University of California, Berkeley, 1991.

In most episodes of health complaints reported in office buildings in the last twenty years, causal factors have not been identified. In order to assess risk factors for work-related symptoms in office workers, a reanalysis was performed of previous studies, and an epidemiologic study was conducted. The reanalysis of data, from all studies available on work-related symptom prevalence in office workers by type of building ventilation, showed remarkable agreement among studies. Air-conditioned buildings were consistently associated with higher prevalence of headache, lethargy, and eye, nose, or throat problems. Humidification was not a necessary factor for this higher prevalence. Mechanical ventilation without air-conditioning was not associated with higher symptom prevalence. Guided by these findings, a study was conducted among 880 office workers, within 12 office buildings selected without regard to worker complaints, in northern California. A number of factors were found associated with prevalence of work-related symptoms, after adjustment in a logistic regression model for personal, psychosocial, job, workspace, and building factors. Two different ventilation types were associated with increases in symptom prevalence, relative to workers in naturally ventilated buildings: mechanical supply and exhaust ventilation, without air conditioning and with operable windows; and air-conditioning with sealed windows. No study buildings were humidified. In both these ventilation types, the highest odds ratios (ORs) found were for skin symptoms (ORs = 5.0, 5.6) and for tight chest or difficulty breathing (ORs = 3.6, 4.3); increases were also found for chills or fever, fatigue or sleepiness, and eye, nose, or throat symptoms. Increased ORs were not found for symptoms hypothesized to be unrelated to indoor air factors. Additional factors were independently associated with prevalence of work-related symptoms. Certain jobs, use of carbonless copies or photocopiers, sharing a workspace, carpets, new carpets, new walls, and distance from a window were associated with symptom increases. Cloth partitions and new paint were associated with symptom decreases. An OR of 14.3 for association between new carpets and respiratory symptoms, and the substantially reduced ORs for many symptoms with presence of cloth partitions or new paint were striking. These findings confirm and extend previously reported findings, and suggest that indoor air-related symptoms in office workers may be commonly related to factors in indoor air.Subjects--Topical Terms:

1017799
Health Sciences, Occupational Health and Safety.

Risk factors for work-related symptoms in northern California office workers.
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035 $a (UMI)AAI9228770
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040 $a UMI $c UMI
100 1 $a Mendell, Mark Judson. $3 1275261
245 1 0 $a Risk factors for work-related symptoms in northern California office workers.
300 $a 121 p.
500 $a Chair: Allan H. Smith.
500 $a Source: Dissertation Abstracts International, Volume: 53-05, Section: B, page: 2272.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 1991.
520 $a In most episodes of health complaints reported in office buildings in the last twenty years, causal factors have not been identified. In order to assess risk factors for work-related symptoms in office workers, a reanalysis was performed of previous studies, and an epidemiologic study was conducted. The reanalysis of data, from all studies available on work-related symptom prevalence in office workers by type of building ventilation, showed remarkable agreement among studies. Air-conditioned buildings were consistently associated with higher prevalence of headache, lethargy, and eye, nose, or throat problems. Humidification was not a necessary factor for this higher prevalence. Mechanical ventilation without air-conditioning was not associated with higher symptom prevalence. Guided by these findings, a study was conducted among 880 office workers, within 12 office buildings selected without regard to worker complaints, in northern California. A number of factors were found associated with prevalence of work-related symptoms, after adjustment in a logistic regression model for personal, psychosocial, job, workspace, and building factors. Two different ventilation types were associated with increases in symptom prevalence, relative to workers in naturally ventilated buildings: mechanical supply and exhaust ventilation, without air conditioning and with operable windows; and air-conditioning with sealed windows. No study buildings were humidified. In both these ventilation types, the highest odds ratios (ORs) found were for skin symptoms (ORs = 5.0, 5.6) and for tight chest or difficulty breathing (ORs = 3.6, 4.3); increases were also found for chills or fever, fatigue or sleepiness, and eye, nose, or throat symptoms. Increased ORs were not found for symptoms hypothesized to be unrelated to indoor air factors. Additional factors were independently associated with prevalence of work-related symptoms. Certain jobs, use of carbonless copies or photocopiers, sharing a workspace, carpets, new carpets, new walls, and distance from a window were associated with symptom increases. Cloth partitions and new paint were associated with symptom decreases. An OR of 14.3 for association between new carpets and respiratory symptoms, and the substantially reduced ORs for many symptoms with presence of cloth partitions or new paint were striking. These findings confirm and extend previously reported findings, and suggest that indoor air-related symptoms in office workers may be commonly related to factors in indoor air.
590 $a School code: 0028.
650 4 $a Health Sciences, Occupational Health and Safety. $3 1017799
650 4 $a Health Sciences, Public Health. $3 1017659
690 $a 0354
690 $a 0573
710 2 $a University of California, Berkeley. $3 687832
773 0 $t Dissertation Abstracts International $g 53-05B.
790 $a 0028
790 1 0 $a Smith, Allan H., $e advisor
791 $a Ph.D.
792 $a 1991
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9228770