Table 2 Summary of average annual intensity (AAI) of exposures by country and case–control status.

	Scotland		Sweden		Romania		Italy		Malta
	Cases (n = 202)	Controls (n = 418)	Cases (n = 201)	Controls (n = 401)	Cases (n = 178)	Controls (n = 370)	Cases (n = 200)	Controls (n = 398)	Cases (n = 178)	Controls (n = 402)
Solvents	0 (0–106) {0–2.82}	0.06 (0–100) {0–3.04}	0 (0–138) {0–0.56}	0 (0–169) {0–1.96}	0 (0–117) {0–0}	0 (0–120) {0–0}	0 (0–122) {0–0.98}	0 (0–125) {0–0.87}	0 (0–187) {0–0}	0 (0–391) {0–0}
Pesticides	0.005 (0–89.6) {0–0.18}	0 (0–50) {0–0.04}	0 (0–50) {0–0}	0 (0–29.1) {0–0}	0 (0–30) {0–0}	0 (0–25) {0–0}	0 (0–8.4) {0–0}	0 (0–10.4) {0–0}	0 (0–65) {0–0}	0 (0–61) {0–0}
Iron	0 (0–285) {0–0}	0 (0–115) {0–0}	0 (0–150) {0–0}	0 (0–150) {0–0}	0 (0–206) {0–0}	0 (0–194) {0–0}	0 (0–188) {0–0}	0 (0–146) {0–0}	0 (0–144) {0–0}	0 (0–213) {0–0}
Manganese	0 (0–285) {0–0}	0 (0–129) {0–0}	0 (0–150) {0–0}	0 (0–150) {0–0}	0 (0–206) {0–0}	0 (0–194) {0–0}	0 (0–188) {0–0}	0 (0–125) {0–0}	0 (0–144) {0–0}	0 (0–213) {0–0}
Copper	0 (0–150) {0–0}	0 (0–100) {0–0}	0 (0–20) {0–0}	0 (0–150) {0–0}	0 (0–33) {0–0}	0 (0–81) {0–0}	0 (0–100) {0–0.48}	0 (0–100) {0–0.05}	0 (0–82.5) {0–0}	0 (0–32.6) {0–0}

Figures represent exposure per year exposed: median (range) {interquartile range}.

100  =  occupational exposure limit (OEL).

Not all interviews were graded for quality: the percentages shown are based on the 946 cases of PD or parkinsonism, 755 cases of PD and 1947 controls graded for quality.