 Although DSSP is the older method and continues to be the most commonly used, the original STRIDE definition reported it to give a more satisfactory structural assignment in at least 70% of cases.In particular, STRIDE was observed to correct for the propensity of DSSP to assign shorter secondary structures than would be assigned by an expert crystallographer, usually due to the minor local variations in structure that are most common near the termini of secondary structure elements.Using a sliding-window method to smooth variations in assignment of single terminal residues, current implementations of STRIDE and DSSP are reported to agree in up to 95.4% of cases.