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. 2011 Dec 12;12:137. doi: 10.1186/1471-2296-12-137

Table 1.

Characteristics of the participants

Physician
(n = 676)
Non-physician staff (n = 2878) p-Value#
Age
[mean (SD)]
50.13 (7.59) 38.31 (12.24) < 0.001
Sex (male) 70.80% 2.80% < 0.001
Mean weekly working time [mean (SD)] 50.63 h (12.85) 26.03 h (12.25) < 0.001

SD standard deviation

#Statistical significance p < 0.05