Table 5.

Validation Parameters for Periodontal Self-Report Items According to Disease Status

Periodontal Self-Report Measures	Severe Disease (n = 18) (95% Cl)				Moderate and Severe Disease (n = 64) (95% Cl)
	Sensitivity	Specificity	PPV	NPV	Sensitivity	Specificity	PPV	NPV
Gum disease	0.33 (0.12 to 0.62)	0.84 (0.71 to 0.93)	0.38 (0.14 to 0.68)	0.81 (0.67 to 0.90)	0.24 (0.1 3 to 0.37)	1 (0.69 to 1.0)	1 (0.75 to 1.0)	0.19 (0.10 to 0.33)
Self-rating	0.67 (0.41 to 0.87)	0.07 (0.02 to 0.17)	0.18 (0.10 to 0.30)	0.40 (0.12 to 0.74)	0.84 (0.74 to 0.92)	1 (0.72 to 1.0)	0.83 (0.72 to 0.91)	1 (0.69 to 1.0)
Treatment	0.78 (0.52 to 0.94)	0.59 (0.45 to 0.72)	0.39 (0.23 to 0.57)	0.89 (0.74 to 0.97)	0.56 (0.42 to 0.68)	0.82 (0.48 to 0.98)	0.94 (0.81 to 0.99)	0.25 (0.12 to 0.42)
Tooth mobility	0.22 (0.06 to 0.48)	0.86 (0.74 to 0.94)	0.33 (0.10 to 0.65)	0.78 (0.66 to 0.87)	0.17 (0.09 to 0.29)	0.91 (0.59 to 1.0)	0.92 (0.62 to 1.0)	0.16 (0.08 to 0.27)
Bone loss	0.56 (0.30 to 0.80)	0.72 (0.58 to 0.83)	0.36 (0.18 to 0.57)	0.85 (0.72 to 0.94)	0.4 (0.28 to 0.54)	1 (0.72 to 1.0)	1 (0.86 to 1.0)	0.23 (0.12 to 0.37)
Appearance	0.12 (0.02 to 0.38)	0.93 (0.83 to 0.98)	0.33 (0.04 to 0.78)	0.79 (0.67 to 0.88)	0.1 (0.04 to 0.20)	1 (0.72 to 1.0)	1 (0.54 to 1.0)	0.17 (0.09 to 0.28)
Flossing	1 (0.81 to 1.0)	0.95 (0.85 to 0.99)	1 (0.29 to 1.0)	0.75 (0.63 to 0.84)	0.05 (0.01 to 0.1 3)	1 (0.72 to 1.0)	1 (0.29 to 1.0)	0.15 (0.08 to 0.26)
Mouthwash	0.33 (0.1 3 to 0.59)	0.54 (0.41 to 0.68)	0.19 (0.07 to 0.36)	0.72 (0.56 to 0.85)	0.41 (0.29 to 0.54)	0.45 (0.17 to 0.77)	0.81 (0.64 to 0.93)	0.12 (0.04 to 0.25)
Diagnosis	0.71 (0.44 to 0.90)	0.65 (0.51 to 0.78)	0.39 (0.22 to 0.58)	0.88 (0.74 to 0.96)	0.46 (0.33 to 0.59)	0.73 (0.39 to 0.94)	0.9 (0.74 to 0.98)	0.2 (0.09 to 0.35)

PPV = positive predictive value; NPV = negative predictive value.