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. 2026 Aug 4;16(8):e114420. doi: 10.1136/bmjopen-2025-114420

Table 1. Demographic characteristics of children and their caregivers (N=1186).

Category n %
Number of boys
 0 479 40.39
 1 599 50.51
 2 104 8.77
 3 4 0.33
Number of girls
 0 500 42.16
 1 585 49.33
 2 95 8.01
 3 5 0.42
 4 1 0.08
Child’s gender
 Male 584 49.24
 Female 602 50.76
Child’s age (year, median: 8)
 1-3 92 7.76
 4-6 310 26.14
 7-14 784 66.10
Family structure*
 Nuclear family 604 50.93
 Core family 462 38.95
 United family 34 2.87
 Single-parent family 45 3.79
 Reorganised family 17 1.43
 Intergenerational family 24 2.03
Number of members in the household
 2 40 3.37
 3 283 23.86
 4 399 33.64
 5 292 24.62
 6 158 13.32
 7 8 0.67
 8 6 0.52
Primary caregivers of children†
 Parent(s) 1013 85.41
 Grandparent(s) 382 32.21
 Other family member(s) 2 0.17
 Childcare services 3 0.25
Educational attainment of primary caregiver
 Junior high school or below 381 32.12
 Senior high school 342 28.84
 College 454 38.28
 Master or above 9 0.76
Monthly household income per capita (yuan)
 <4000 193 16.27
 4000–6999 379 31.96
 7000–9999 273 23.02
 10000–14999 209 17.62
 ≥15 000 132 11.13
*

The composition of family structures is: (1) Nuclear family: parents and children. (2) Core family: grandparents, parents, and children. (3) United family: multiple generations including grandparents, parents, children, and grandchildren. (4) Single-parent family: one parent with children. (5) Reorganised family: single parents with children after remarriage. (6) Intergenerational family: grandparents and children.

†

Multiple-choice question with no fixed terms.