Table 2. Median Urinary Iodine Concentrations and Percentages of Levels <50 and ≥100 µg/L in Filipino Women Aged 15 to 45 Years Old by Region.
| Region | Number | Median (20th–80th percentile) | % <50 µg/dL (95% CI) | % ≥100 µg/dL (95% CI) |
|---|---|---|---|---|
| Philippines | 6,194 | 123 (46–233) | 21.5 (20.2–22.8) | 58.1 (56.3–59.9) |
| Ilocos Region | 390 | 105 (34–220) | 26.7 (20.6–32.8) | 52.3 (42.1–62.5) |
| Cagayan Valley | 302 | 100 (40–205) | 23.5 (16.4–30.7) | 50.9 (42.8–58.9) |
| Central Luzon | 569 | 127 (52–236) | 19.2 (14.7–23.7) | 59.8 (54.7–64.8) |
| Calabarzon | 676 | 168 (82–289) | 12.4 (10.3–14.5) | 74.1 (69.9–78.3) |
| Mimaropa | 260 | 122 (50–217) | 19.2 (13.5–25.0) | 60.1 (51.1–69.0) |
| Bicol | 321 | 116 (47–205) | 21.7 (17.8–25.6) | 55.3 (49.9–60.6) |
| Western Visayas | 372 | 96 (31–202) | 29.2 (23.7–34.7) | 47.2 (41.6–52.9) |
| Central Visayas | 390 | 109 (46–198) | 22.1 (18.3–25.9) | 53.0 (47.4–58.5) |
| Eastern Visayas | 311 | 125 (66–220) | 13.7 (9.9–17.6) | 60.6 (52.8–68.3) |
| Western Mindanao | 280 | 74 (26–161) | 36.9 (30.4–43.5) | 37.7 (29.9–45.6) |
| Northern Mindanao | 343 | 101 (39–189) | 25.1 (21.1–29.1) | 50.4 (44.4–56.4) |
| Southern Mindanao | 365 | 91 (35–174) | 27.7 (24.3–31.1) | 45.8 (39.7–51.9) |
| Central Mindanao | 348 | 103 (32–219) | 29.1 (23.4–34.7) | 50.7 (45.5–55.9) |
| NCR | 589 | 160 (54–260) | 18.3 (14.9–21.7) | 66.4 (62.3–70.5) |
| CAR | 245 | 107 (40–196) | 23.5 (15.9–31.2) | 50.9 (43.5–58.2) |
| ARMM | 202 | 72 (25–172) | 36.9 (25.1–48.7) | 41.9 (31.3–52.6) |
| Caraga | 231 | 113 (48–218) | 20.7 (10.0–31.4) | 55.1 (42.3–67.8) |
CI, confidence interval; NCR, National Capital Region; CAR, Cordillera Administrative Region; ARMM, Autonomous Region in Muslim Mindanao.