| CB | PIU | PMPU | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Yes | No | χ2 | Yes | No | χ2 | Yes | No | χ2 | ||
Gender | Male | 18 | 264 | Â | 82 | 200 | Â | 25 | 257 | Â |
Female | 18 | 301 | 0.15 | 85 | 234 | 0.44 | 29 | 290 | 0.01 | |
Family background | City | 20 | 220 | Â | 72 | 168 | Â | 24 | 216 | Â |
Rural | 16 | 345 | 3.90* | 95 | 266 | 0.98 | 30 | 331 | 0.50 | |
Only child or not | Yes | 10 | 200 | Â | 61 | 149 | Â | 23 | 187 | Â |
No | 26 | 365 | 0.87 | 106 | 285 | 0.26 | 31 | 360 | 1.53 | |
TPD | <1Â h | 2 | 114 | Â | 8 | 39 | Â | 1 | 28 | Â |
1–2 | 15 | 302 |  | 20 | 83 |  | 1 | 84 |  | |
2–3 | 9 | 121 |  | 32 | 124 |  | 9 | 135 |  | |
3–4 | 6 | 20 |  | 30 | 72 |  | 5 | 103 |  | |
>4Â h | 4 | 8 | 34.3*** | 77 | 116 | 24.7*** | 38 | 197 | 26.1*** | |
UH | <3y | _ | _ | Â | 21 | 101 | Â | 3 | 17 | Â |
3–5y | _ | _ |  | 51 | 112 |  | 5 | 109 |  | |
5–10y | _ | _ |  | 74 | 175 |  | 21 | 251 |  | |
>10y | _ | _ | _ | 21 | 46 | 8.70* | 25 | 170 | 7.90* | |
Means | Retail store | 15 | 211 | Â | _ | _ | Â | _ | _ | Â |
Computer | 1 | 16 | Â | 42 | 157 | Â | _ | _ | Â | |
Mobile phone | 20 | 338 | 0.27 | 125 | 277 | 6.60* | _ | _ | _ |