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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: JAMA Ophthalmol. 2014 Jan;132(1):84–95. doi: 10.1001/jamaophthalmol.2013.5506

Table 3. Baseline characteristics of the combined study population.

Cases Controls P-value
Age, y (mean +/- SD) 62.4 +/- 6.9 62.4 +/- 6.9 0.94
Smoking (N, %)
Current 171 (15.5%) 239 ( 9.5%) <0.0001
Past 478 (43.4%) 1042 (41.5%) 0.27
Obesity (N, %) 146 (13.2%) 255 (10.1%) 0.007
Omega-3 FA Intake, g/d (mean +/- SD) 0.74 +/- 0.77 0.75 +/- 0.73 0.83