Is rheumatoid factor the strongest predictor of radiological progression of rheumatoid arthritis in a three-year prospective study in community-recruited patients?
RF is the main factor that can predict radiological progression in community cases of RA of limited duration.
Based on this analysis the normal sperm count is about 65 million per mL. Using these reference value, only the 25% of the studies in infertile men are above this value, and the 75% studies with fertile men (>65 x 106 sperm/mL).