Table 3.
Mean (SD) crowding index in each group
| Total | Control group | Esophagitis group | P value | |
|---|---|---|---|---|
| Mean Crowding index(m 2 /n) | 21.58 (SD = 10.98) | 21.3 (SD = 9.23) | 22.13 (SD = 12.43) | 0.06 |
SD: standard Deviation; m2/n: Home surface divided by family number
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