Wave | ||||||
---|---|---|---|---|---|---|
1997 | 2000 | 2004 | 2006 | 2009 | N | |
Boys | Proportion (%) | |||||
Only childa | 37 (22.0) | 55 (22.5) | 97 (28.5) | 118 (34.7) | 188 (50.7) | 495 |
Never left behind | 120 (71.4) | 157 (64.1) | 226 (66.3) | 217 (63.8) | 249 (67.1) | 969 |
Left behind in early childhood only | 4 (2.4) | 16 (6.5) | 35 (10.3) | 47 (13.8) | 67 (18.1) | 169 |
Left behind in early and later childhood | 5 (3.0) | 14 (5.7) | 22 (6.5) | 19 (5.6) | 18 (4.9) | 78 |
Left behind in later childhood only | 39 (23.2) | 58 (23.7) | 58 (17.0) | 57 (16.8) | 37 (10.0) | 249 |
Mean (s.d.) | ||||||
Height (cm) | 93.6 (13.7) | 103.2 (17.5) | 114.8 (24.6) | 117.9 (27.0) | 120.3 (30.5) | 1465 |
Weight (kg) | 14.3 (3.6) | 17.4 (5.6) | 22.6 (10.0) | 24.4 (12.1) | 26.179 (15.0) | 1465 |
Age (years) | 3.6 (1.7) | 5.1 (2.5) | 7.0 (3.7) | 7.5 (4.2) | 7.6 (4.8) | 1465 |
Household income per capita (RMB) | 3100.7 (2735.1) | 3508.4 (2741.4) | 4594.5 (4088.1) | 4938.8 (5103.2) | 8471.8 (7968.2) | 1465 |
Asset score | 1.2 (0.7) | 1.2 (0.8) | 1.6 (0.8) | 1.7 (0.8) | 1.8 (0.8) | 1465 |
Girls | Proportion (%) | |||||
Only childa | 26 (23.4) | 32 (18.4) | 61 (23.6) | 85 (30.9) | 102 (37.5) | 306 |
Never left behind | 82 (73.9) | 112 (64.4) | 166 (64.3) | 179 (65.1) | 182 (66.9) | 721 |
Left behind in early childhood only | 7 (6.3) | 8 (4.6) | 27 (10.5) | 37 (13.5) | 38 (14.0) | 117 |
Left behind in early and later childhood | 4 (3.6) | 10 (5.8) | 17 (6.6) | 16 (5.8) | 16 (5.9) | 63 |
Left behind in later childhood only | 18 (16.2) | 44 (25.3) | 48 (18.6) | 43 (15.6) | 36 (13.2) | 189 |
Mean (s.d.) | ||||||
Height (cm) | 90.5 (14.9) | 103.0 (17.2) | 112.5 (25.3) | 116.8 (26.9) | 120.8 (27.2) | 1090 |
Weight (kg) | 13.2 (3.7) | 16.8 (5.1) | 21.4 (9.8) | 24.0 (12.4) | 25.9 (13.7) | 1090 |
Age (years) | 3.3 (1.8) | 5.2 (2.4) | 6.7 (3.7) | 7.4 (4.2) | 8.0 (4.7) | 1090 |
Household income per capita (RMB) | 3232.9 (2796.2) | 3593.2 (3626.2) | 4600.4 (4162.2) | 5416.7 (5865.4) | 7158.6 (6862.7) | 1090 |
Asset score | 1.3 (0.7) | 1.2 (0.7) | 1.6 (0.8) | 1.7 (0.8) | 1.7 (0.8) | 1090 |