# Table 4 Stepwise logistic regression analyses of teeth in both jaws and single jaw for age group 18 to 39 years, 40 to 60 years, and overall 18 to 60 years

Tooth variable B S.E. Wald statistic df Sig. Exp(B)
Age group 18 to 39 years (N= 100 pairs of dental cast)
Both jaws MD13 − 5.997 1.844 10.574 1 .001 .002
BL13 3.896 1.196 10.605 1 .001 49.205
MD14 4.748 1.349 12.389 1 .000 115.401
MD21 2.175 .853 6.500 1 .011 8.798
BL23 1.965 1.015 3.746 1 .053 7.132
BL24 2.124 1.049 4.102 1 .043 8.366
BL37 1.366 .559 5.973 1 .015 3.920
BL44 3.589 1.464 6.012 1 .014 36.211
BL45 − 5.103 1.369 13.897 1 .000 .006
Constant − 63.493 15.363 17.080 1 .000 .000
Maxillary teeth MD11 1.397 .692 4.074 1 .044 4.043
MD13 − 2.161 .896 5.816 1 .016 .115
BL13 1.595 .611 6.819 1 .009 4.928
MD14 1.922 .708 7.369 1 .007 6.836
BL23 1.745 .602 8.402 1 .004 5.725
Constant − 31.700 7.608 17.363 1 .000 .000
Mandibular teeth BL33 1.128 .346 10.652 1 .001 3.089
BL44 1.815 .511 12.620 1 .000 6.139
Constant − 20.187 4.361 21.428 1 .000 .000
Age group 40 to 60 years (N= 100 pairs of dental cast)
Both jaws BL13 1.775 .485 13.395 1 .000 5.900
MD15 − 2.044 .690 8.766 1 .003 .130
BL31 2.390 .779 9.405 1 .002 10.915
MD37 1.013 .448 5.105 1 .024 2.754
Constant − 21.804 5.164 17.829 1 .000 .000
Maxillary teeth MD12 2.325 .873 7.098 1 .008 10.232
BL13 2.774 .647 18.403 1 .000 16.018
BL14 1.983 .830 5.707 1 .017 7.266
MD15 − 2.365 .797 8.808 1 .003 .094
BL16 1.855 .810 5.240 1 .022 6.391
MD22 − 1.929 .885 4.744 1 .029 .145
BL24 − 1.899 .982 3.738 1 .053 .150
Constant − 27.167 7.729 12.356 1 .000 .000
Mandibular teeth BL31 2.509 .684 13.465 1 .000 12.286
MD32 1.315 .579 5.153 1 .023 3.724
MD35 − 1.505 .555 7.353 1 .007 .222
BL35 1.032 .510 4.101 1 .043 2.807
Constant − 18.500 4.117 20.193 1 .000 .000
Overall age group 18 to 60 years (N= 200 pairs of dental cast)
Both jaws MD11 1.049 .363 8.349 1 .004 2.856
BL13 1.279 .310 17.043 1 .000 3.591
BL23 .878 .273 10.337 1 .001 2.407
BL27 .389 .189 4.237 1 .040 1.476
Constant − 27.126 4.221 41.303 1 .000 .000
Maxillary teeth MD11 1.049 .363 8.349 1 .004 2.856
BL13 1.279 .310 17.043 1 .000 3.591
BL23 .878 .273 10.337 1 .001 2.407
BL27 .389 .189 4.237 1 .040 1.476
Constant − 27.126 4.221 41.303 1 .000 .000
Mandibular teeth BL33 .593 .293 4.106 1 .043 1.810
BL36 .508 .249 4.156 1 .041 1.662
MD43 .996 .349 8.167 1 .004 2.708
BL43 .562 .309 3.299 1 .069 1.754
Constant − 18.400 3.104 35.135 1 .000 .000