Table 4.
Incidence proportion and rank of median D1−6MFT scores among independent variables (n = 123).
| Independent variables | n (%) | Enamel and dentin caries | |||
|---|---|---|---|---|---|
| Incidence proportion (%) | pa | Rank of median D1−6MFT score | pb | ||
| Sex | 0.001 | 0.001 | |||
| Female | 35 (28.5) | 27 (77.1) | 76 | ||
| Male | 88 (71.5) | 39 (44.3) | 56 | ||
| Residence | 0.243 | 0.245 | |||
| Suburban | 50 (40.7) | 30 (60.0) | 66 | ||
| Urban | 73 (59.3) | 36 (49.3) | 59 | ||
| Caregiver | 0.952 | 0.836 | |||
| Other people | 31 (61.8) | 41 (53.9) | 59 | ||
| Father | 16 (13.0) | 9 (56.3) | 62 | ||
| Mother | 76 (25.2) | 16 (51.6) | 65 | ||
| Education of caregiver | 0.396 | 0.398 | |||
| ≥9 years | 18 (14.6) | 71 (46.4) | 56 | ||
| <9 years | 105 (85.4) | 413 (47.9) | 63 | ||
| Household monthly income (CNY) | 0.905 | 0.826 | |||
| <3,000 | 18 (14.6) | 9 (50.0) | 62 | ||
| 3,000–7,000 | 78 (63.4) | 43 (55.1) | 63 | ||
| ≥7,000 | 27 (22.0) | 14 (51.9) | 58 | ||
| One-child family | 0.261 | 0.262 | |||
| No | 86 (69.9) | 49 (57.0) | 64 | ||
| Yes | 37 (30.1) | 17 (45.9) | 57 | ||
| Frequency of tooth brushing | 0.972 | 0.972 | |||
| <2 times per day | 71 (57.7) | 38 (47.2) | 62 | ||
| ≥2 times per day | 52 (42.3) | 28 (48.3) | 62 | ||
| Dental flossing | 0.972 | 0.343 | |||
| No | 111 (90.2) | 449 (53.5) | 70 | ||
| Yes | 12 (9.8) | 35 (43.8) | 61 | ||
| Toothpaste | 0.275 | 0.277 | |||
| Non-fluoride | 29 (23.6) | 13 (44.8) | 63 | ||
| Fluoride | 94 (76.4) | 53 (56.4) | 56 | ||
| Frequency of snack consumption | 0.055 | 0.022 | |||
| ≥1 per day | 48 (39.0) | 32 (66.7) | 76 | ||
| Not every day | 75 (61.0) | 34 (45.3) | 55 | ||
| Frequency of sweet drink consumption | 0.320 | 0.416 | |||
| ≥1 per day | 80 (65.0) | 44 (55.0) | 74 | ||
| Not every day | 43 (35.0) | 22 (51.2) | 64 | ||
| Orthodontics appliance | 0.647 | 0.649 | |||
| Yes | 3 (2.4) | 2 (66.7) | 70 | ||
| No | 120 (97.6) | 64 (53.3) | 62 | ||
| Dental attendance in the past 6 months | 0.986 | 0.986 | |||
| Yes | 56 (54.5) | 30 (53.6) | 62 | ||
| No | 67 (45.5) | 36 (53.7) | 62 | ||
| Dental insurance | 0.090 | 0.216 | |||
| Yes | 23 (81.3) | 16 (69.6) | 60 | ||
| No | 100 (18.7) | 50 (50.0) | 70 | ||
| Saliva secretion (ml/min) | 0.754 | 0.272 | |||
| <0.25 | 35 (28.5) | 18 (51.4) | 64 | ||
| ≥0.25 | 88 (71.5) | 48 (54.5) | 57 | ||
| Saliva buffering capability (pH) | 0.684 | 0.175 | |||
| <3.5 | 40 (32.5) | 23 (57.5) | 64 | ||
| 3.5–4.25 | 26 (21.1) | 14 (53.8) | 62 | ||
| ≥4.25 | 57 (46.3) | 29 (50.9) | 61 | ||
| Mean(SD) | ORc | pc | ORd | pd | |
| Plaque index | 1.13 (0.66) | 0.877 | 0.179 | 1.011 | 0.873 |
| Cariostat score | 1.46 (0.59) | 0.752 | 0.003 | 1.228 | 0.011 |
| Baseline age (years) | 13.12 (0.40) | 1.032 | 0.849 | 0.774 | 0.250 |
a
Chi-squared test.
b
Mann-Whitney U test or Kruskal-Wallis H test.
c
Logistic regression.
d
Negative binominal regression.