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Table 2 General characteristics of the subjects and periodontal disease after propensity score matching (n = 2,070)

From: The relationship between hormone replacement therapy and periodontal disease in postmenopausal women: a cross-sectional study the Korea National Health and Nutrition Examination Survey from 2007 to 2012

Characteristics Group Periodontal disease X2
No (N = 1,315) Yes (N = 755)
HRT status HRT- 629 (60.77) 406 (39.23) 0.009**
HRT+ 686 (66.28) 349 (33.72)
Age(y) 45–54 395 (66.28) 201 (33.72) 0.089
55–64 581 (63.85) 329 (36.15)
65–74 339 (60.11) 225 (39.89)
Education Elementary and below 542 (58.91) 378 (41.09) < 0.001***
Middle 287 (65.83) 149 (34.17)
High and above 486 (68.07) 228 (31.93)
Family incomea Low 255 (59.58) 173 (40.42) < 0.001***
Middle low 350 (60.56) 228 (39.45)
Middle upper 309 (61.55) 193 (38.45)
Upper 401 (71.35) 161 (28.65)
Body mass indexb Normal 850 (64.94) 459 (35.06) 0.081
Obese 465 (61.11) 296 (38.9)
Age of menopause(y) < 45 197 (60.43) 129 (39.57) 0.206
≥45 1118 (64.11) 626 (35.89)
Alcohol consumption No 364 (62.01) 223 (37.99) 0.662
Past 566 (64.24) 315 (35.75)
Drinking 385 (63.95) 217 (36.05)
Smoking No 1247 (64.81) 677 (35.19) < 0.001***
Yes 68 (46.58) 78 (53.42)
Dental visit < 1 years No 953 (63.49) 548 (36.51) 0.956
Yes 362 (63.62) 207 (36.38)
Use of oral care products No 791 (60.29) 521 (39.71) < 0.001***
Yes 524 (69.13) 234 (30.87)
Frequency of tooth brushing per day < 3 726 (61.06) 463 (38.94) 0.007**
≥3 589 (66.86) 292 (33.14)
  1. HRT hormone replacement therapy
  2. aIncome quartile. bAsia-Pacific Standard: normal, less than 25 kg/m2; obese, more than 25 kg/m2
  3. **p < 0.01, ***p < 0.001