Impact of Periodontal Diseases on Health-Related Quality of Life of Users of the Brazilian Unified Health System

Table 2

Mean, standard deviation, and 𝑃-value (Mann-Whitney and Kruskal-Wallis) of socioeconomic and demographic variables per domain and overall OHIP-14 of patients treated in the Periodontics section, Dental Specialty Centres (Centros de Especialidades Odontológicas), Juiz de Fora, 2013.

Variable	Mean per domain (SD)
	1	2	3	4	5	6	7	Total
Gender
Male	0.41 (0.52)	0.74 (0.52)	0.84 (0.55)	0.84 (0.55)	0.56 (0.50)	0.41 (0.61)	0.35 (0.52)	4.16 (2.58)
Female	0.46 (0.55)	0.98 (0.54)	0.95 (0.54)	0.95 (0.54)	0.80 (0.53)	0.33 (0.51)	0.39 (0.53)	4.88 (2.68)
𝑃-value	0.72	0.005	0.188	0.188	0.007	0.643	0.620	0.097
Age
18–47 years old	0.44 (0.51)	0.93 (0.51)	0.98 (0.55)	0.98 (0.55)	0.77 (0.51)	0.39 (0.54)	0.39 (0.56)	4.89 (2.54)
Over 47 years old	0.43 (0.57)	0.85 (0.56)	0.85 (0.54)	0.85 (0.54)	0.66 (0.54)	0.34 (0.56)	0.36 (0.50)	4.35 (2.74)
𝑃-value	0.742	0.455	0.128	0.128	0.200	0.494	0.911	0.215
Self-reported skin colour
White	0.46 (0.56)	0.84 (0.57)	0.91 (0.56)	0.91 (0.56)	0.62 (0.52)	0.33 (0.51)	0.34 (0.50)	4.42 (2.69)
Nonwhite	0.42 (0.52)	0.94 (0.50)	0.91 (0.54)	0.91 (0.54)	0.80 (0.53)	0.39 (0.59)	0.41 (0.55)	4.79 (2.63)
𝑃-value	0.682	0.325	0.956	0.956	0.043	0.818	0.523	0.403
Marital status
Nonmarried	0.54 (0.59)	0.81 (0.55)	0.97 (0.55)	0.97 (0.55)	0.77 (0.52)	0.37 (0.54)	0.40 (0.54)	4.83 (2.77)
Married	0.34 (0.47)	0.97 (0.52)	0.86 (0.54)	0.86 (0.54)	0.65 (0.54)	0.36 (0.56)	0.35 (0.52)	4.38 (2.54)
𝑃-value	0.32	0.68	0.174	0.174	0.214	0.789	0.461	0.365
Education level
Elementary	0.44 (0.57)	0.90 (0.53)	0.88 (0.58)	0.88 (0.58)	0.73 (0.57)	0.38 (0.57)	0.38 (0.55)	4.58 (2.87)
Secondary + higher	0.43 (0.50)	0.88 (0.56)	0.95 (0.50)	0.95 (0.50)	0.68 (0.48)	0.35 (0.53)	0.37 (0.50)	4.63 (2.41)
𝑃-value	0.800	0.983	0.475	0.475	0.563	0.849	0.873	0.788
Gross income in dollars/month—ABEP classification
USD 12,054. 30 +  USD 6,104.20	0.38 (0.50)	0.86 (0.55)	0.85 (0.60)	0.85 (0.60)	0.60 (0.50)	0.23 (0.49)	0.32 (0.48)	4.08 (2.58)
USD 3,875. 50 +; USD 2,631.20 +; USD 1,784.80	0.47 (0.56)	0.91 (0.54)	0.94 (0.52)	0.94 (0.52)	0.76 (0.54)	0.42 (0.57)	0.40 (0.55)	4.84 (2.67)
𝑃-value	0.390	0.672	0.532	0.532	0.132	0.027	0.530	0.123
Professional occupation
Work	0.47 (0.54)	0.91 (0.48)	0.89 (0.53)	0.89 (0.53)	0.71 (0.50)	0.40 (0.57)	0.42 (0.58)	4.71 (2.68)
Does not work	0.48 (0.58)	1.01 (0.61)	1.10 (0.51)	1.10 (0.51)	0.81 (0.57)	0.44 (0.56)	0.30 (0.39)	5.23 (2.38)
Retired	0.37 (0.52)	0.79 (0.59)	0.85 (0.57)	0.85 (0.56)	0.64 (0.56)	0.25 (0.51)	0.33 (0.50)	4.09 (2.72)
𝑃-value	0.461	0.195	0.166	0.166	0.501	0.173	0.717	0.200

Significant (𝑃-value < 0.005).