Table 2.

Spearman correlation coefficients between component exposure at participant addresses estimated from supervised linear regression and random forest models ($N=323,782$).

Subcohort	${\text{PM}}_{2.5}$ Cu	${\text{PM}}_{2.5}$ Fe	${\text{PM}}_{2.5}$ K	${\text{PM}}_{2.5}$ Ni	${\text{PM}}_{2.5}$ S	${\text{PM}}_{2.5}$ Si	${\text{PM}}_{2.5}$ V	${\text{PM}}_{2.5}$ Zn
Averagea	0.81	0.84	0.22	0.33	0.59	0.56	0.27	0.60
CEANS-SDPP	0.27	0.72	0.16	0.24	0.48	$-0.01$	0.16	0.27
CEANS-SIXTY	0.86	0.89	$-0.09$	0.44	0.39	0.76	$-0.07$	0.45
CEANS-SALT	0.88	0.91	$-0.09$	0.47	0.38	0.81	$-0.11$	0.44
CEANS-SNACK	0.86	0.90	0.49	0.47	0.79	0.70	0.39	0.53
DCH	0.94	0.89	$-0.37$	0.69	0.78	0.53	0.58	0.61
DNC-1993	0.80	0.79	0.31	0.45	0.72	0.43	0.35	0.63
DNC-1999	0.77	0.78	0.35	0.43	0.70	0.41	0.34	0.63
EPIC-NL-MORGEN	0.92	0.93	0.82	0.89	0.20	0.59	0.7	0.52
EPIC-NL-Prospect	0.94	0.94	0.11	0.09	0.58	0.82	$-0.22$	0.71
HNR	0.81	0.70	$-0.33$	0.53	0.56	0.72	0.53	0.79
E3N	0.90	0.89	0.62	0.51	0.67	0.55	0.72	0.83
KORA-S3	0.71	0.84	0.23	$-0.17$	0.62	0.79	$-0.03$	0.55
KORA-S4	0.77	0.85	$-0.03$	0.10	0.59	0.85	0.22	0.67
VHM&PP	0.88	0.74	0.89	$-0.51$	0.79	$-0.16$	0.22	0.74

Note: CEANS, Cardiovascular Effects of Air Pollution and Noise in Stockholm; Cu, copper; DCH, Diet, Cancer and Health cohort; DNC, Danish Nurse Cohort (1993 and 1999); EPIC-NL, European Prospective Investigation into Cancer and Nutrition–Netherlands cohort; E3N, Etude Epidémiologique auprès de femmes de la Mutuelle Générale de l’Education Nationale; Fe, iron; HNR, Heinz Nixdorf Recall study; K, potassium; KORA, the Cooperative Health Research in the Region of Augsburg [1994–1995 (S3) and 1999–2001 (S4)], MORGEN, Monitoring Project on Risk Factors and Chronic Diseases in the Netherlands; Ni, nickel; ${\text{PM}}_{2.5}$, fine particulate matter; S, sulfur; SALT, Stockholm Screening Across the Lifespan Twin study; SDPP, Stockholm Diabetes Prevention Program; Si, silicon; SIXTY, Stockholm Cohort of 60-Year-Olds; SNACK, Swedish National Study on Aging and Care in Kungsholmen; V, vanadium; VHM&PP, Vorarlberg Health Monitoring and Prevention Program; Zn, zinc.

^aAverage of cohort-specific correlation coefficients. Cohort-specific correlations are shown because the analyses mostly exploit within-cohort exposure contrasts (i.e., stratified by subcohort identification).