The Impact of Subject Age, Gender, and Arch Length on Attitudes of Syrian Dentists towards Shortened Dental Arches

Table 3

Mean difference and standard deviation of the mean difference for paired -test to examine the impact of arch length on dentists’ attitudes towards SDAs.

Length of the SDA	Subject age
	35 years of age		50 years of age		70 years of age
	M	F	M	F	M	F
(6 to 6) versus (5 to 5)	0.16 (0.25)	0.17 (0.27)	0.14 (0.32)	0.17 (0.31)	0.12 (0.30)	0.12 (0.30)
(6 to 6) versus (4 to 4)	0.25 (0.35)	0.27 (0.35)	0.25 (0.41)	0.27 (0.43)	0.21 (0.44)	0.22 (0.45)
(6 to 6) versus (3 to 3)	0.37 (0.45)	0.39 (0.41)	0.37 (0.51)	0.41 (0.48)	0.34 (0.58)	0.36 (0.56)
(5 to 5) versus (4 to 4)	0.09 (0.17)	0.11 (0.16)	0.11 (0.19)	0.10 (0.24)	0.09 (0.26)	0.10 (0.28)
(5 to 5) versus (3 to 3)	0.21 (0.29)	0.22 (0.26)	0.22 (0.32)	0.23 (0.31)	0.22 (0.41)	0.24 (0.41)
(4 to 4) versus (3 to 3)	0.12 (0.19)	0.11 (0.16)	0.12 (0.22)	0.13 (0.17)	0.13 (0.26)	0.14 (0.26)

Significant difference at /6 = 0.008 (Bonferroni’s correction).
M: male.
F: female.
SDA: shortened dental arch.
6: first molar; 5: second premolar.
4: first premolar; 3: canine.