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sd, standard deviation; IQR, interquartile range
| Knowledge for positioning (Range of scores 0-29) | n (%) |
| Poor knowledge (<20) | 110(85.9) |
| Good knowledge (>20) | 18 (14.1) |
| Mean score (sd) | 14.5 (± 4.22) |
| Median score (IQR) | 14 (11, 18) |
