Table 3.
Key variables of first follow-up (age 6 years), China Jintan Cohort Study
| Areaa |
|||||
|---|---|---|---|---|---|
| City centre n = 545 | Suburb n = 554 | Rural n = 286 | Total n = 1385 | ||
| Cognitive ability (IQ) | |||||
| Performance IQ | 109.07 ± 14.59 | 103.95 ± 13.65 | 94.16 ± 13.56 | 104.02 ± 15.04 | |
| Verbal IQ | 107.96 ± 14.39 | 103.60 ± 15.13 | 96.72 ± 12.08 | 103.95 ± 14.84 | |
| Full-scale IQ | 109.25 ± 13.64 | 103.88 ± 13.71 | 94.71 ± 12.09 | 104.17 ± 14.39 | |
| Behaviour | |||||
| CBCL total | Mother | 33.40 ± 19.93 | 33.39 ± 21.38 | 34.41 ± 22.08 | 33.60 ± 20.95 |
| TRF | Teacher | 18.73 ± 16.79 | 17.36 ± 15.68 | 26.52 ± 18.37 | 19.76 ± 17.04 |
aFour pre-schools are categorized into: (1) City centre: Jianshe; (2) Suburb: Huacheng; and (3); Rural: Xuebu and Huashan.