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. 2020 Aug 26;5(3):46. doi: 10.3390/geriatrics5030046

Table 2.

Logistic regression models showing the associations between Periodontal disease and low grip strength among the study sample (N = 1953).

Low Grip Strength Cut-Off Points: 30 kg for Men, 20 kg for Women Low Grip Strength Cut-Off Points: 26 kg for Men, 16 kg for Women
Model 1 Model 2 Model 3 Model1 Model 2 Model3
OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI) OR (95% CI)
Periodontitis No or mild (Reference)
Moderate/Severe 1.53 *
(1.03, 2.27)
1.39
(0.88, 2.19)
1.09
(0.67, 1.77)
1.24
(0.67, 2.27)
1.03
(0.58, 1.85)
0.83
(0.46, 1.50)
Age 1.19 ***
(1.15, 1.22)
1.17 ***
(1.13, 1.20)
1.19 ***
(1.12, 1.25)
1.15 ***
(1.07, 1.24)
Gender Male (Reference)
Female 2.10 **
(1.34, 3.30)
1.41
(0.81, 2.46)
1.57
(0.83, 2.97)
1.01
(0.40, 2.53)
Ethnicity Non-Hispanic White (Reference)
Hispanic 1.31
(0.63, 2.74)
0.77
(0.26, 2.20)
Other race 0.87
(0.40, 1.86)
0.86
(0.28, 2.66)
Non-Hispanic black 0.51
(0.26, 1.03)
0.57
(0.20, 1.65)
Marital status Single (Reference)
Living with partner 0.56 *
(0.34, 0.92)
0.51
(0.21, 1.22)
Income (ratio of family income to poverty) 0.78 **
(0.69, 0.89)
0.82
(0.64, 1.04)
Education Above college (Reference)
College 1.10
(0.68, 1.76)
1.20
(0.49, 2.93)
High school 1.05
(0.65, 1.69)
1.30
(0.49, 3.44)
Smoking status Never smoker (Reference)
Former smoker 0.72
(0.48, 1.07)
0.69
(0.33, 1.42)
Current smoker 1.29
(0.42, 3.87)
1.04
(0.21, 5.16)
Diabetes No (Reference)
Yes 1.62 *
(1.13, 2.34)
2.09
(0.96, 4.51)
Comorbidity No systemic diseases (Reference)
Having systemic disease 1.53 *
(1.07, 2.19)
1.30
(0.84, 2.01)
BMI (kg/m2) Mean BMI 0.95 *
(0.92, 0.99)
0.95
(0.90, 1.00)
Physical activity Inactive (Reference)
Active 0.59 *
(0.39, 0.89)
0.45 *
(0.22, 0.89)

Notes: CI = confidence interval; OR = odds ratio. The p values for the OR were obtained using logistic regression: * p < 0.05; ** p < 0.01; *** p < 0.001. Model 1: Unadjusted Logistic regression model. Model 2: Adjusted for age and gender. Model 3: Fully adjusted (as in Model 2 and additionally adjusted for ethnicity, income, education level, marital status, smoking status, diabetes, comorbidity, BMI and physical activity).