Page:NIOSH Hazard review of Carbonless Copy Paper.pdf/90

---

Table 4-10. Incidence of symptoms in exposed workers and their matched comparison workers during two exposure periods

Exposure period and type of worker		Number of responses[1]	Symptoms (%)
			Eye irritation	Red eyes	Skin irritation	Facial erythema	Erythema of the hands	Pruritus	Rash	Nasal Congestion	Runny nose	Nosebleed	Cough
Exposure period 1:[2]
	Comparison worker	18	33.3	22.2	16.7	11.1	0	22.2	11.1	11.1	5.6	0	11.1
	Exposed worker	5	60.0	20.0	80.0	0	20.0	100.0	0	60.0	0	20.0	60.0
Exposure period 2:[3]
	Comparison worker	16	25.0	25.0	25.0	6.3	6.3	18.8	12.5	6.3	18.8	0	12.5
	Exposed worker	15	20.0	20.0	13.3	20.0	13.3	33.3	6.7	20.0	20.0	6.7	20.0

Source: Omland et al. [1993].

1. Some comparison workers were unable to respond because they were absent from work.
2. Workers were exposed to 1,200 fresh forms per day during period 1.
3. Workers were exposed to 280 forms (with broken microcapsules) per day during period 2.