Preoperative High-Dose Steroid Has Long-Term Beneficial Effects for Myasthenia Gravis

Table 1

Patients characteristics.

Characteristics	Preoperative high-dose steroid; (𝑁=113)	No preoperative steroid; (𝑁=58)	P value
Male/female (sex)	38/75	27/31	0.10 (𝜒^2-test)
Onset age years	45.8 (±18.9)	41.3 (±18.2)	0.14 (t-test)
<40/≧40 (onset age years)	43/70	29/29	0.13 (𝜒^2-test)
Thymoma (±)	22/91	16/42	0.23 (𝜒^2-test)
<1/≧1 year; (time of diagnosis from onset)	70/43	30/28	0.20 (𝜒^2-test)
Osserman
1	22	9
2A	39	14	0.19 (U-test)
2B	40	28
3	9	4
4	3	3
(1, 2A/others)	61/52	23/35	0.08 (𝜒^2-test)
Immunosuppressant drug use after surgery (±)	10/103	1/57	0.07 (𝜒^2-test)
Follow-up duration (years)	5.3 (±3.4)	6.9 (±2.6)	<0.05 (U-test)

Data were expressed by mean (Standard deviation: SD).