Hi Jeff,
A few papers that we are going to extract the data from are:
1) Acosta-Rojas, E.R., et al., Association Between Visual Impairment and Patient-Reported Visual Disability at Different Stages of Cataract Surgery. Ophthalmic Epidemiology, 2006. 13(5): p. 299-307.
2) Alió, J.L., D.P. Piñero, and A.B. Plaza-Puche, Visual outcomes and optical performance with a monofocal intraocular lens and a new-generation single-optic accommodating intraocular lens. Journal of Cataract & Refractive Surgery. 36(10): p. 1656-1664.
3) Arshinoff, S.A., Y.N.J. Strube, and R. Yagev, Simultaneous bilateral cataract surgery. Journal of Cataract & Refractive Surgery, 2003. 29(7): p. 1281-1291.
one papers compare 2 lens and other one is purely on Simultaneous bilateral cataract surgery.
My questions is: for patient baseline (before surgery) characteristics which are different from after surgery characteristics (outcomes). In data extraction there is only outcome, intervention, and outcome classification. How to input baseline (before surgery) characteristics fo 2 treatements of cataract surgery. (intervention)?
Monali