In the pretest and the @ - , @ - , and @-month posttests , the median -LSB- range -RSB- duration of cricothyrotomy was respectively @ s -LSB- @ to @ -RSB- , @ s -LSB- @ to @ -RSB- , @ s -LSB- @ to @ -RSB- , and @ s -LSB- @ to @ -RSB- ( P < @ vs. in the pretest ) , the median -LSB- range -RSB- checklist score was @ -LSB- @ to @ -RSB- , @ -LSB- @ to @ -RSB- , @ -LSB- @ to @ -RSB- , and @ -LSB- @ to @ -RSB- ( P < @ vs. in the pretest ) and the median -LSB- range -RSB- global rating scale was @ -LSB- @ to @ -RSB- , @ -LSB- @ to @ -RSB- , @ -LSB- @ to @ -RSB- , and @ -LSB- @ to @ -RSB- ( P < @ vs. in the pretest ) .