Learning Curves of Macintosh Laryngoscope in Nurse Anesthetist Trainees Using Cumulative Sum Method

Table 3

Individual results.

Nurse anesthetist trainee	Attempts	Successes	Success rate (95% CI)	Number of attempts needed to cross ℎ0
1	36	35	0.97 (0.85, 0.99)	8
2	47	38	0.81 (0.67, 0.91)	23
3	34	29	0.85 (0.69, 0.95)	25
4	30	19	0.63 (0.44, 0.80)	Not crossed
5	37	36	0.97 (0.86, 0.99)	12
6	39	32	0.82 (0.86, 0.92)	22
7	31	26	0.83 (0.66, 0.95)	12
8	32	26	0.81 (0.64, 0.93)	29
9	33	28	0.85 (0.68, 0.95)	25
10	30	24	0.80 (0.61, 0.92)	18
11	39	30	0.77 (0.61, 0.89)	22
Total	388	323	0.83 (0.79, 0.87)	Median = 22

CI: confidence interval.