Table 3.

 Frequency of C reactive protein quartiles as defined by Seddon et al among AMD and non-AMD subjects and associated odds ratios and 95% confidence intervals

	C reactive protein groups
	0.2–1.2 mg/l	1.2–2.7 mg/l	2.7–6.5 mg/l	6.5–117.0 mg/l
AMD (n)	133	130	84	42
Without AMD (n)	783	844	452	250
OR (95% CI)*	1.0	0.91 (0.70–1.18)	1.09 (0.81–1.47)	0.99 (0.68–1.44)
OR (95% CI)†	1.0	0.91 (0.70–1.19)	1.18 (0.87–1.60)	1.10 (0.75–1.61)
OR (95% CI)‡	1.0	0.97 (0.73–1.30)	1.39 (0.99–1.96)	1.09 (0.70–1.70)

AMD, age related macular degeneration; n, number; OR, odds ratio; CI, confidence intervals.

*Unadjusted.

†Adjusted for age, sex, and race.

‡Adjusted for all variables appearing in table 1.