Table 2 MBL concentrations and MBL2 genotypes

Polyarthritis

Oligoarthritis

Exon 1 mutations

   Sum A/A

120 (62)

128 (59)

43(64)

85 (56)

   Sum A/O

65 (33)

81 (37)

22 (33)

59 (39)

A/B

40 (21)

43 (20)

14 (21)

29 (19)

A/C

5 (3)

7 (3)

0 (0)

7 (5)

A/D

20 (10)

31 (14)

8 (12)

23 (15)

   Sum O/O

9 (5)

9 (4)

2 (2)

7 (5)

B/B

4 (2)

4 (2)

1 (1)

3 (2)

B/C

1 (0)

0 (0)

0 (0)

0 (0)

B/D

2 (1)

3 (1)

1 (1)

2 (1)

C/D

0 (0)

1 (0)

0 (0)

1 (1)

D/D

2 (1)

1 (0)

0 (0)

1 (1)

   Total

194 (100)

218 (100)

67 (100)

151 (100)

Genotype groups

   High

110 (57)

113 (52)

36 (54)

77 (51)

YA/YA

60 (31)

62 (28)

21 (31)

41 (27)

YA/XA

50 (26)

51 (23)

15 (22)

36 (24)

   Medium

52 (27)

71 (33)

23 (34)

48 (32)

XA/XA

10 (5)

15 (7)

7 (10)

8 (5)

YA/O

42 (22)

56 (26)

16 (24)

40 (27)

   Low

32 (16)

34 (16)

8 (12)

26 (17)

XA/O

23 (12)

25 (12)

6 (9)

19 (13)

O/O

9 (4)

9 (4)

2 (3)

7 (5)

   Total

194 (100)

218 (100)

67 (100)

151 (100)

MBL concentration

   High

1.65 (1.20 to 2.69)

1.86 (1.23 to 3.26)

1.87 (1.14 to 3.15)

1.85 (1.32 to 3.67)

   Medium

0.52 (0.40 to 0.92)

0.77 (0.38 to 1.41)

0.89 (0.32 to 1.79)

0.73 (0.38 to 1.43)

   Low

0.04 (0.02 to 0.13)

0.07 (0.04 to 0.15)

0.10 (0.05 to 0.15)

0.07 (0.04 to 0.17)