Table 2 Prevalence rates (95% CI) of untreated dental caries and sealant by income level
Variables | Children aged 6–11 | Difference | Adolescents aged 12–18 | Difference | ||
|---|---|---|---|---|---|---|
2007–09 | 2013–15 | 2007–09 | 2013–15 | |||
Untreated dental caries | ||||||
Total | 8.7 (7.3–10.1) | 5.7 (4.3–7.1) | −3.0 | 32.7 (30.1–35.3) | 23.7 (20.7–26.7) | −9.0 |
Gender | ||||||
 Male | 8.9 (6.9–10.9) | 5.3 (3.5–7.2) | −3.5 | 31.6 (28.3–35.0) | 24.7 (21.0–28.4) | −6.9 |
 Female | 8.5 (6.6–10.4) | 6.1 (4.2–8.1) | −2.4 | 34.0 (30.4–37.6) | 22.6 (18.7–26.6) | −11.4 |
P-value | 0.795 | 0.536 | Â | 0.315 | 0.386 | Â |
Income level | ||||||
 I (lowest) | 11.9 (8.8–14.9) | 5.7 (3.2–8.2) | −6.2 | 42.0 (36.5–47.4) | 32.0 (25.9–38.1) | −10.0 |
 II | 10.5 (7.5–13.6) | 7.1 (4.0–10.1) | −3.5 | 33.3 (28.5–38.1) | 20.6 (15.3–25.8) | −12.7 |
 III | 7.4 (4.9–9.8) | 3.2 (1.4–5.0) | −4.1 | 27.6 (22.8–32.3) | 22.3 (17.2–27.4) | −5.2 |
 IV (highest) | 5.2 (3.2–7.1) | 6.8 (3.6–10.0) | 1.6 | 28.2 (23.8–32.7) | 19.9 (14.1–25.6) | −8.4 |
P-value | 0.001 | 0.152 |  | < 0.001 | 0.006 |  |
FTB | ||||||
  < 2 | 14.8 (10.4–19.3) | 9.6 (3.6–15.5) | −5.3 | 30.7 (23.9–37.4) | 31.0 (21.2–40.7) | 0.3 |
  ≥ 2 | 7.7 (6.2–9.2) | 5.4 (4.0–6.8) | −2.3 | 33.0 (30.4–35.7) | 23.1 (20.0–26.2) | −9.9 |
P-value | 0.001 | 0.091 | Â | 0.513 | 0.095 | Â |
RDC | ||||||
 No | 10.0 (7.6–12.3) | 5.1 (2.8–7.3) | −4.9 | 34.2 (30.8–37.6) | 28.1 (24.0–32.2) | −6.1 |
 Yes | 8.1 (6.3–9.8) | 6.0 (4.2–7.7) | −2.1 | 31.0 (27.5–34.5) | 17.8 (14.5–21.1) | −13.2 |
P-value | 0.192 | 0.553 |  | 0.166 | <  0.001 |  |
Sealants | ||||||
Total | 30.6 (28.0–33.3) | 40.7 (37.5–44.0) | 10.1 | 26.8 (24.2–29.3) | 37.0 (33.8–40.2) | 10.2 |
Gender | ||||||
 Male | 29.6 (26.3–32.9) | 40.3 (36.2–44.4) | 10.7 | 26.1 (23.1–29.2) | 36.4 (32.5–40.3) | 10.3 |
 Female | 31.7 (28.2–35.2) | 41.2 (36.9–45.6) | 9.5 | 27.5 (23.9–31.1) | 37.6 (33.3–41.9) | 10.1 |
P-value | 0.320 | 0.737 | Â | 0.539 | 0.651 | Â |
Income level | ||||||
 I (lowest) | 24.5 (20.2–28.7) | 40.1 (34.1–46.1) | 15.6 | 16.9 (13.0–20.7) | 27.8 (22.5–33.0) | 10.9 |
 II | 31.7 (26.9–36.4) | 37.5 (31.6–43.4) | 5.8 | 24.4 (19.7–29.0) | 38.5 (32.3–44.6) | 14.1 |
 III | 30.9 (26.0–35.8) | 42.7 (36.8–48.6) | 11.8 | 29.6 (25.1–34.1) | 37.3 (31.8–42.7) | 7.7 |
 IV (highest) | 35.3 (30.5–40.1) | 42.9 (36.7–49.2) | 7.6 | 35.9 (30.9–40.9) | 44.6 (38.3–51.0) | 8.7 |
P-value | 0.008 | 0.522 |  | <  0.001 | 0.001 |  |
FTB | ||||||
  < 2 | 24.6 (19.2–30.0) | 35.1 (25.7–44.5) | 10.5 | 20.4 (15.1–25.7) | 35.6 (25.5–45.8) | 15.2 |
  ≥ 2 | 31.6 (28.8–34.4) | 41.2 (37.8–44.6) | 9.7 | 27.7 (25.0–30.3) | 37.1 (33.8–40.4) | 9.4 |
P-value | 0.024 | 0.240 | Â | 0.020 | 0.789 | Â |
RDC | ||||||
 No | 24.8 (20.7–28.9) | 36.1 (30.3–41.9) | 11.3 | 21.9 (18.8–25.0) | 33.4 (29.5–37.3) | 11.6 |
 Yes | 33.4 (30.3–36.5) | 42.6 (38.9–46.3) | 9.2 | 32.4 (28.7–36.1) | 41.7 (37.2–46.2) | 9.4 |
P-value | 0.001 | 0.062 |  | <  0.001 | 0.003 |  |