Fig. 4

PADL, SF- 12, Zarit Burden interview scores of elderly tracheostomy patients with different causes at six months of follow-up (**: P < 0.01, *: P < 0.05)
PADL, SF- 12, Zarit Burden interview scores of elderly tracheostomy patients with different causes at six months of follow-up (**: P < 0.01, *: P < 0.05)