Table 1 Results from cluster analysis according to game final score differences (close, balanced and unbalanced games).

Group	Cluster Group	Score Differences	Games (%)
IRB	Close Games	0 a 15 points	64 (53%)
	Balanced Games	16 a 34 points	46 (38%)
	Unbalanced Games	35 a 53 points	10 (8%)
S12	Close Games	0 a 11 points	95 (46%)
	Balanced Games	12 a 25 points	79 (39%)
	Unbalanced Games	26 a 43 points	30 (15%)