Median costs ( labour and materials ) for securement per patient were significantly higher in all groups compared with the control group ( SPU , $ @ -LSB- IQR , $ @ - $ @ -RSB- ; BPU + SPU , $ @ -LSB- IQR , $ @ - $ @ -RSB- ; SSD + SPU , $ @ -LSB- IQR , $ @ - $ @ -RSB- ; TA + SPU , $ @ -LSB- IQR , $ @ - $ @ -RSB- ; all P < @ ) .