Table 4.

Generalized ordered regression model. Risk factors associated with CAL.

Level 1	MODEL 1	MODEL 2
BASE OUTCOME Mild CAL	OR (IC 95%)	OR (IC 95%)
Compared with Moderate + Advanced CAL
CITIES Bogotá	1	1
Other	1.34 ** (1.09–1.64)	1.58 † (1.25–2.01)
AGE < 45 years	1	1
>55 years	1.46 ** (1.21–1.77)	1.45 † (1.20–1.75)
MICROORGANISMS
P. gingivalis Negative	1	1
Positive	1.93 ** (1.35–2.76)	2.44 † (1.77–3.38)
T. forsythia Negative	1
Positive	1.88 ** (1.30–2.70)
ANTIBODIES
Low levels	1
IgG1 P. gingivalis	0.85 (0.67–1.06)
Middle-High
Low levels	1
IgG2. A. actinomycetemcomitans	1.50 † (1.23–1.81)	1.48 † (1.22–1.78)
Middle-High
PLAQUE INDEX Low	1	1
Middle-High	2.69 † (2.20–3.29)	2.76 † (2.27–3.36)
OBESITY Negative	1
Positive	2.99 ** (1.40–6.36)
SMOKING Negative	1	1
Positive	1.94 ** (1.31–2.87)	1.88 ** (1.28–2.76)
Level 2
BASE OUTCOME	Mild + Moderate CAL
Comparison with advanced CAL
REGION	1	1
Bogota	1.34 ** (1.09–1.64)	1.54 † (1.21–1.96)
Other regions
AGE < 45 years	1	1
>55 years	1.46 † (1.21–1.77)	1.46 † (1.21–1.76)
MICROORGANISMS
P. gingivalis Negative	1	1
Positive	1.93 † (1.35–2.76)	1.89 † (1.33–2.69)
T. forsythia Negative	1
Positive	1.88 ** (1.30–2.70)	2.33 † (1.56–3.49
ANTIBODIES Low level	1
IgG1 P. gingivalis	1.42 ** (1.12–1.80)
Middle-High
Low levels	1	1
IgG2 A. actinomycetemcomitans Middle-High Level	1.50 † (1.23–1.81)	1.50 † (1.24–1.81)
PLAQUE INDEX Low level	1	1
Middle-High level	2.69 † (2.20–3.29)	2.67 † (2.19–3.26)
OBESITY Negative	1
Positive	0.94 (0.50–1.74)
SMOKING Never	1	1
Current	1.94 ** (1.31–2.87)	1.86 ** (1.26–2.74)

Middle CAL (clinical attachment loss) < 2 mm, MP= moderate CAL > 2 < 3.5 mm, advanced CAL ≥ 3.5 mm. ** p < 0.05. † p < 0.000. Level 1: comparison of mild vs. moderate and advanced CAL. Level 2: comparison mild and moderate vs. advanced CAL. Difference in BIC: model 1 = 1276.918, model 2 = 1287.819 = −10.901; this provides positive support for model 1.