TABLE 2.

Characteristics of participants in eighteen studies examining the within-participant correlation between ambient and personal PM_2.5.

			Participant Age (years)
Study	Sub-study	No.	Mean	Min	Max	% Female	Comorbidity
Janssen et al. 19998		13	10.8	10	12	54	N
Ebelt et al. 200045		16	74	54	86	56	P
Janssen et al. 200027	1	36	72	55	84	35	C
	2	46	68	54	89	49	C
Sarnat et al. 200028	1	14	75	64	NR	60	N
	2	14	75	64	NR	60	N
Williams et al. 200046		19	81	72	93	81	N, C, P
Rodes et al. 200147,48		5	85	55	NR	68	N
Sarnat et al. 200129	1	6a	11	9	13	33	N
	2	28a	(Children and elderly)			NC	N, P
Suh et al. 200349	1	15	68.1	55	84	87	P
	2	15	70	60	84	93	P
Adgate et al. 200330		28	42	24	64	72	N
Liu et al. 200350	1	34	76.3	66	88	61	N
	2	51	77.3	65	89	55	P
	3	33	76.6	57	86	35	C
	4	21	9	6	13	24	P
Williams et al. 200351		36	70	55	85	74	C
Reid 200312	1	16	64	33	88	33	C, P
	2	21	63	33	84	50	C, P
Sarnat et al. 200541	1	29	(Children and elderly)			73	N
	2	27	(Children and elderly)			83	N
Kim et al. 200611		28	64	49	80	11	C
Noullett et al. 200652		14	11	10	12	53	N
Sarnat et al. 200642	1	10	72.4	NR	NR	80	N
	2	10	69.8	NR	NR	90	N
Wu et al. 200653		11	27	18	52	66	P
Brown et al. 200840	1	12	NC	40	NC	20	C, P
	2	11	NC	40	NC	27	C, P
18 studies, 1999 – 2008b	29	619	70	6	93	60%	41% N

^aExcludes participants in Sarnat et al, 2000²⁸

^bSummary statistics reported as counts, range, proportion, or median

For comorbidity, N indicates none; P, chronic pulmonary disease; C, chronic cardiovascular disease.

NR indicates not reported; NC, not collected.