Table 1 Distribution and statistical significance by demographic variables for ECC among a sample of 3–5 years old children in China (n = 1301)
Variables | CF (n, (%)) | ECC (n, (%)) | P |
|---|---|---|---|
gender | |||
 male | 235 (36.1) | 416 (63.9) | 0.616 |
 female | 226 (34.8) | 424 (65.2) | |
Age | |||
 3 | 203 (48.9)a | 212 (51.1)a | 0.000 |
 4 | 142 (32.2)b | 299 (67.8)b | |
 5 | 116 (26.1)b | 329 (73.9)c | |
Region | |||
 urban | 227 (34.9) | 424 (65.1) | 0.343 |
 weihai | 111 (34.3) | 213 (65.7) | |
 hedong, linyi | 116 (35.5) | 211 (64.5) | |
 rural | 234 (36.0) | 416 (64.0) | |
 weifang | 106 (32.7) | 218 (67.3) | |
 pingyi, linyi | 128 (39.3) | 198 (60.7) | |
Education | |||
 Elementary school and below | 88 (34.9) | 164 (19.5) | 0.699 |
 junior high school | 192 (36.8) | 330 (39.3) | |
 Senior high school and above | 181 (34.3) | 346 (41.2) | |
Income | |||
 less than 30,000 | 111 (34.0) | 215 (27.4) | 0.357 |
 40,000–60,000 | 166 (38.0) | 271 (34.5) | |
 more than 70,000 | 153 (33.8) | 300 (38.2) | |