The phrase "attrition of the two" is correct and usable in written English.
It can be used in contexts discussing the gradual reduction or weakening of two entities, such as teams, resources, or relationships.
Example: "The attrition of the two rival teams over the season led to a significant change in the league standings."
Alternatives: "diminution of the two" or "reduction of the two".
The effect of the attrition on the three outcome parameters was assessed by Mann Whitney tests and showed highly significant differences in the "moderate" and "poor" outcome groups but not in the "good" outcome groups (see Table 3).
The results of the PSD test showed that the attrition mechanisms of the three samples were a mixture of abrasion and fragmentation.
The latest flare-up in the long-running war of attrition between the two countries comes on the heels of a bloody summer of protest and repression in Kashmir that has now been erased from memory by the banging of war drums in Delhi and Islamabad.
He saw Romney as having the advantage in the upcoming caucuses and primaries but anticipated the war of attrition between the two continuing through to at least Super Tuesday on 6 March, when 10 states vote.
In this war of attrition between the two most powerful forces in British public life - the elected government and the BBC - both sides seem in effect to be undermining the reputation of a dead man... Anyone who doubted how much might be at stake here will have to think again.
Differential enrollment of practices and patients will be undertaken initially to account for potential differences in rates of attrition between the two study arms.
In the adjusted time-to-event analysis of ART attrition at the two hospitals (with adjustment for the measured factors shown in Fig. 2), ART attrition declined significantly following the earthquake in Jacmel (HR=0.51 for after vs. before earthquake comparison; p=0.03) (see Table 3).
One key limitation of this study is the lack of power as a result of the high attrition between the two time points.
Some participants may be recruited solely to the sorting and rating phase if saturation of the brainstorming topic is achieved prior to recruiting the planned number of participants, or if there is significant participant attrition between the two phases of the study.
What better way to be reminded that the race is not always to the swiftest, than with a bruising battle across one of the greatest circuits in the world, where the big boys in the prototypes swung and missed, punched and counter-punched until, finally, after a real old-school battle of attrition, the Six Hours of Spa had its last man standing on Saturday.
