Table 2.

Characteristics of peak exposures metrics described in exposure studies.

Study characteristic	Overall	Particulate matter	VOC/solvents	Gases	Physical agents	Environmental pollutants
	N (%)	N (%)	N (%)	N (%)	N (%)	N (%)
N (%)	110 (100)	24 (22)	31 (28)	13 (12)	13 (12)	34 (31)
Sampling strategy
Real-time	84 (76)	20 (83)	13 (42)	12 (92)	13 (100)	26 (76)
Grab-instantaneous	4 (4)	–	3 (10)	–	–	1 (3)
Task time integrated	26 (24)	4 (17)	17 (55)	1 (8)	–	4 (12)
Full shift time integrated	7 (6)	2 (8)	1 (3)	–	–	4 (12)
Modeling	3 (3)	–	2 (6)	–	–	1 (3)
Qualitative/Judgment/JEM	3 (3)	–	2 (6)	–	–	–
Sample type
Personal	73 (66)	15 (63)	17 (55)	10 (77)	11 (85)	20 (59)
Area	50 (45)	13 (54)	14 (45)	5 (38)	4 (31)	14 (41)
NA or Not reported	9 (8)	–	7 (23)	–	–	1 (3)
Sample averaging time
Instantaneous/instrument	53 (48)	14 (58)	13 (42)	9 (69)	5 (38)	12 (35)
Short-duration (15 min.)	18 (16)	2 (8)	12 (39)	3 (23)	–	1 (3)
Variable task (0.5–4 h)	47 (43)	7 (29)	11 (35)	5 (38)	6 (46)	18 (53)
Full-shift/session (4–8 h)	18 (16)	1 (4)	1 (3)	–	6 (46)	10 (29)
Not reported	5 (5)	1 (4)	2 (6)	–	–	1 (3)
Peak exposure summary metric
Highest intensity/category	102 (93)	21 (88)	27 (87)	12 (92)	12 (92)	30 (88)
Plots	35 (32)	11 (46)	6 (19)	6 (46)	–	12 (35)
Average intensity short-term	51 (46)	11 (46)	21 (68)	5 (38)	5 (38)	9 (26)
95th percentile	21 (19)	5 (21)	5 (16)	1 (8)	3 (23)	7 (21)
Duration > target	10 (9)	2 (8)	2 (6)	1 (8)	2 (15)	2 (6)
Frequency #/% > target	24 (22)	4 (17)	7 (23)	3(23)	5 (38)	5 (15)
Yes/No event, > target	2 (2)	1 (4)	–	–	–	–
Variability (GSD)	7 (6)	3 (13)	2 (6)	–	2 (15)	–
Other	7 (6)	1 (4)	1 (3)	1 (8)	3 (23)	1 (3)

Percentages can be >100 when multiple characteristics are present in one study, or <100 when looking at only a sub portion of the data.