Prevalence of short stature in boys and girls according to China and WHO references
| Stratification | Prevalence, % | ||
| Both | Boys | Girls | |
| China reference | |||
| Age group (years) | |||
| 7–9 | 1646 (3.07) | 843 (3.14) | 803 (2.99) |
| 10–12 | 1878 (3.49) | 867 (3.22) | 1011 (3.76) |
| 13–15 | 2396 (4.45) | 1387 (5.16) | 1009 (3.75) |
| 16–18 | 1927 (3.67) | 874 (3.33) | 1053 (4.00) |
| P for trends | <0.0001 | <0.0001 | <0.0001 |
| Residence | |||
| Urban | 2382 (2.23) | 1189 (2.22) | 1193 (2.23) |
| Rural | 5465 (5.12) | 2782 (5.21) | 2683 (5.02) |
| P value for difference | <0.0001 | <0.0001 | <0.0001 |
| Socioeconomic development | |||
| Developed | 1851 (2.60) | 928 (2.61) | 923 (2.59) |
| Intermediately developed | 2652 (3.72) | 1341 (3.76) | 1311 (3.68) |
| Underdeveloped | 3344 (4.69) | 1702 (4.78) | 1642 (4.61) |
| P for trends | <0.0001 | <0.0001 | <0.0001 |
| Total | 7847 (3.67) | 3971 (3.72) | 3876 (3.62) |
| WHO reference | |||
| Age group (years) | |||
| 7–9 | 776 (1.45) | 331 (1.23) | 445 (1.66) |
| 10–12 | 994 (1.85) | 164 (0.61) | 830 (3.09) |
| 13–15 | 1525 (2.83) | 718 (2.67) | 807 (3.00) |
| 16–18 | 2485 (4.73) | 1152 (4.39) | 1333 (5.07) |
| P for trends | <0.0001 | <0.0001 | <0.0001 |
| Residence | |||
| Urban | 1823 (1.70) | 754 (1.41) | 1069 (2.00) |
| Rural | 3957 (3.71) | 1611 (3.02) | 2346 (4.39) |
| P value for difference | <0.0001 | <0.0001 | <0.0001 |
| Socioeconomic development | |||
| Developed | 1377 (1.93) | 549 (1.54) | 828 (2.32) |
| Intermediately developed | 1979 (2.78) | 821 (2.30) | 1158 (3.25) |
| Underdeveloped | 2424 (3.40) | 995 (2.79) | 1429 (4.01) |
| P for trends | <0.0001 | <0.0001 | <0.0001 |
| Total | 5780 (2.70) | 2365.00 (2.21) | 3415 (3.19) |