Table 3. Odds Ratios for Low Levels of eVO₂ max (≤31.98 mL/kg/minute) Across Quartiles of Attachment Loss and Probing Depth, NHANES 1999–2004.

	Model 1 (n = 2761)				Model 2 (n = 2760)
	OR	95% CI			OR	95% CI
Attachment Loss
Quartile 1	ref	ref		ref	ref	ref		ref
Quartile 2	1.09	0.78	–	1.51	1.09	0.78	–	1.51
Quartile 3	1.23	0.85	–	1.78	1.22	0.84	–	1.77
Quartile 4	0.89	0.64	–	1.24	0.89	0.64	–	1.24
Age (years)	1.04	1.02	–	1.06	1.04	1.02	–	1.06
Ethnicity
Other	1.23	0.68	–	2.23	1.23	0.68	–	2.21
Hispanic or Mexican	1.43	0.99	–	2.07	1.41	0.97	–	2.03
Black	2.17	1.62	–	2.91	2.2	1.65	–	2.93
Non Hispanic White	ref	ref		ref	ref	ref		ref
Gender
Male	0.1	0.07	–	0.14	0.1	0.07	–	0.15
Female	ref	ref		ref	ref	ref		ref
Education
Some college or graduate	1.24	0.79	–	1.94	1.23	0.78	–	1.93
Highschool	1.41	1.01	–	1.97	1.41	1	–	1.99
Less than highschool	ref	ref		ref	ref	ref		ref
Smoking status
Current	0.62	0.45	–	0.87	0.61	0.45	–	0.84
Former	1.12	0.78	–	1.61	1.12	0.78	–	1.62
Never	ref	ref		ref	ref	ref		ref
BMI
Obese	1.68	1.21	–	2.34	1.61	1.19	–	2.18
Overweight	1.33	0.95	–	1.86	1.3	0.94	–	1.81
Underweight	0.58	0.24	–	1.39	0.59	0.25	–	1.39
Normal	ref	ref		ref	ref	ref		ref
MET min/week
High	0.57	0.41	–	0.8	0.58	0.42	–	0.8
Moderate	0.8	0.51	–	1.24	0.8	0.51	–	1.26
Low	0.97	0.7	–	1.34	0.97	0.7	–	1.34
None	ref	ref		ref	ref	ref		ref
Hypertension
Yes	0.94	0.65	–	1.36	0.93	0.64	–	1.35
No	ref	ref		ref	ref	ref		ref
Diabetes Status
Yes	1.24	0.58	–	2.68	1.24	0.57	–	2.68
No	ref	ref		ref	ref	ref		ref
Cholesterol (mg/dL)	1	1	–	1.01	1	1	–	1.01
Pulse (30 sec x2 )	1.04	1.02	–	1.05	1.04	1.02	–	1.05
WBC count (x 109 cells/L)					1.01	0.94	–	1.09
CRP (mg/dL)					1.07	0.92	–	1.25
Probing Depth
Quartile 1	ref	ref		ref	ref	ref		ref
Quartile 2	1.07	0.82	–	1.39	1.07	0.82	–	1.4
Quartile 3	0.94	0.67	–	1.32	0.94	0.67	–	1.32
Quartile 4	0.77	0.51	–	1.15	0.77	0.51	–	1.15
Age (years)	1.04	1.02	–	1.05	1.04	1.02		1.06
Ethnicity
Other	1.24	0.68	–	2.25	1.23	0.68	–	2.23
Hispanic or Mexican	1.47	1.01	–	2.14	1.45	1	–	2.11
Black	2.19	1.61	–	2.97	2.22	1.64	–	3
Non Hispanic White	ref	ref		ref	ref	ref		ref
Gender
Male	0.1	0.07	–	0.15	0.1	0.07	–	0.15
Female	ref	ref		ref	ref	ref		ref
Education
Some college or graduate	1.22	0.78	–	1.9	1.21	0.77	–	1.9
Highschool	1.38	0.98	–	1.95	1.38	0.97	–	1.97
Less than highschool	ref	ref		ref	ref	ref		ref
Smoking status
Current	0.63	0.44	–	0.89	0.61	0.44	–	0.85
Former	1.14	0.8	–	1.63	1.14	0.79	–	1.64
Never	ref	ref		ref	ref	ref		ref
BMI
Obese	1.68	1.22	–	2.33	1.61	1.19	–	2.18
Overweight	1.32	0.95	–	1.84	1.3	0.94	–	1.79
Underweight	0.56	0.24	–	1.31	0.56	0.24	–	1.3
Normal	ref	ref		ref	ref	ref		ref
MET min/week
High	0.57	0.41	–	0.8	0.57	0.41	–	0.8
Moderate	0.78	0.5	–	1.22	0.79	0.5	–	1.24
Low	0.97	0.7	–	1.34	0.97	0.7	–	1.35
None	ref	ref		ref	ref	ref		ref
Hypertension
Yes	0.95	0.66	–	1.38	0.94	0.65	–	1.36
No	ref	ref		ref	ref	ref		ref
Diabetes Status
Yes	1.26	0.58	–	2.72	1.26	0.58	–	2.72
No	ref	ref		ref	ref	ref		ref
Cholesterol (mg/dL)	1	1	–	1.01	1	1	–	1.01
Pulse (30 sec x2 )	1.04	1.02	–	1.05	1.04	1.02	–	1.05
WBC count (x 109 cells/L)					1.02	0.95	–	1.09
CRP (mg/dL)					1.07	0.92	–	1.24

Model 1: adjusted for age, race/ethnicity, gender, education, smoking, poverty-income ratio, BMI, MET-score, hypertension, diabetes, cholesterol, pulse.

Model 2: Model 1+ C-reactive protein and white blood cell count.