Effect of Ergonomics-Based Piano Teaching on Teachers’ Physical and Mental Health and the Improvement of Sense of Happiness

Table 4

Age differences of teachers’ professional well-being.

	N	Average	Standard deviation	95% confidence interval of average value		Minimum value	Maximum value
				Lower limit	Upper limit
1	86	2.286	0.673	2.076	2.495	1.0	3.0
2	108	3.774	0.576	3.615	3.932	3.0	5.0
3	14	4.571	0.534	4.077	5.066	4.0	5.0
Total	208	3.216	1.611	3.017	3.414	1.0	5.0