Table 4 Adjusted* relative prevalence of microalbuminuria† vs high-normal and normal levels (below 25 mg/g), per 10 μg/m³ increment in particulate matter, among 3864 MESA participants without macroalbuminuria seen at baseline visit, 2000–2002

Pollutant and exposure period	Relative prevalence (95% CI)
PM_2.5
Previous 30 days	0.94 (0.77 to 1.16)
Previous 60 days	0.90 (0.71 to 1.14)
PM₁₀
Previous 30 days	0.88 (0.76 to 1.02)
Previous 60 days	0.83 (0.70 to 0.99)
Previous two decade exposure (1982–2002),
from AUC for monthly levels
PM₁₀ from nearest monitors	0.92 (0.77 to 1.08)
Imputed exposures‡
PM₁₀	0.98 (0.87 to 1.10)
PM_2.5	0.98 (0.84 to 1.14)

*Adjustment: baseline covariates (degrees of freedom): age (1), gender (1), race (3), BMI (1), cigarette status (never, former, current) (2), environmental tobacco smoke exposure (1), per cent dietary protein (1).
†Albuminuria defined as UACR ⩾25 mg/g; macroalbuminuria ⩾250 mg/g.
‡Imputations from time-space model (see text).
AUC, area under the curve; 95% CI, 95% confidence interval.