Table 2. The response of corticosteroid for the treatment-related pulmonary toxicities.

	Drug-induced ILD (n=88)			Radiation pneumonitis (n=189)			AE COPD (n=47)			Others (n=74)			Pa
	No.	%		No.	%		No.	%		No.	%
Steroid regimenb													<0.001
Pulse	22	25		5	3		0	0		7	10
High-dose	42	48		33	17		19	40		21	28
Low-dose	24	27		151	80		28	60		46	62
Corticosteroid response													<0.001
Fatal	31	35		24	13		9	19		28	38
Recovered	57	65		165	87		38	81		46	62

Abbreviations: ILD, interstitial lung disease; AE COPD, acute exacerbation of chronic obstructive pulmonary disease. ^aP value was calculated by 2 test; ^bSteroid regimen: Pulse, ≥500 mg/day methylprenisolone for 3 days, followed by high-dose steroid; high-dose, ≥0.5 mg/kg/day prednisolone; low-dose, <0.5 mg/kg/day prednisolone.