Table 6 Distribution of risk classification for 3-month combined model and baseline model for refractory hyperthyroidism

Model B (MMI ≥ 20 mg/day)

 Class I + (< 36%)^a

15

8

0

23

20% (3/15)^b

38% (3/8)^b

(–)

 Class II + (36–63%)^a

14

11

10

35

43% (6/14)^b

55% (6/11)^b

70% (7/10)^b

 Class III + (63–83%)^a

10

13

15

38

80% (8/10)^b

62% (8/13)^b

67% (10/15)^b

 Class IV + (≥ 83%)^a

0

6

12

18

(–)

100% (6/6)^b

100% (12/12)^b

 Total

39

38

37

114

Model C (MMI < 20 mg/day)

 Class I + (< 21%)^a

61

0

0

51

13% (8/61)^b

(–)

(–)

 Class II + (21–44%)^a

45

13

0

58

29% (13/45)^b

38% (5/13)^b

(–)

 Class III + (44–63%)^a

30

21

4

55

60% (18/30)^b

52% (11/21)^b

50% (2/4)^b

 Class IV + (≥ 63%)^a

8

24

26

58

50% (4/8)^b

83% (20/24)^b

85% (22/26)^b

 Total

144

58

30

232