Characteristics of surveyed children and their caregivers (n=754)
| Characteristic | Percentage or median |
| Children | |
| Age, %(n) | |
| 6–11 months | 32.8 (247) |
| 12–17 months | 32.6 (246) |
| 18–23 months | 34.6 (261) |
| Sex, %(n) | |
| Boy | 52.1 (393) |
| Girl | 47.9 (361) |
| Main caregivers, %(n) | |
| Mother | 48.7 (367) |
| Grandparent | 46.4 (350) |
| Father | 4.8 (36) |
| Other | 0.1 (1) |
| Mothers | |
| Age in years (median (Q1, Q3)) | 29(26,31) |
| Nationality, % (n) | |
| Han | 69.9 (523) |
| Tu | 22.8 (171) |
| Tibetan | 6.3 (47) |
| Hui | 0.3 (2) |
| Others | 0.7 (5) |
| Education, % (n) | |
| Illiterate | 4.0 (30) |
| Primary school | 13.8 (103) |
| Junior high school | 61.6 (461) |
| Senior high school or above | 17.4 (130) |
| Do not know | 3.2 (24) |
| Grandparents | |
| Age in year (median (Q1, Q3)) | 54(50,59) |
| Education, % (n) | |
| Illiterate | 60.3 (211) |
| Primary school | 22.6 (79) |
| Junior high school | 15.1 (53) |
| Senior high school | 1.1 (4) |
| Do not know | 0.9 (3) |
| Household income, %(n) | |
| Working outside the county | 89.2 (673) |
| Agriculture-related work | 6.4 (48) |
| Self-employed | 2.9 (22) |
| Others | 1.2 (9) |
| Do not know | 0.3 (2) |