Table 4

Association of demographic, clinical, and laboratory characteristics and MBL2 genotype expression groups: oligoarthritis

Characteristic

MBL genotype expression groups

Pa

Pb

High (n = 77)

Medium (n = 48)

Low (n = 26)

Demographic variables

Males

22 (29%)

10 (21%)

8 (31%)

NS

NS

Age (years) at onset

6.6 (3.4 to 10.6)

8.7 (2.6 to 12.1)

6.6 (2.9 to 12.6)

NS

NS

Disease duration (years) at follow up

14.5 (13.6 to 15.9)

15.1 (13.2 to 16.1)

15.3 (14.1 to 16.4)

NS

NS

Clinical variables

NS

NS

Cumulative affected joints

3 (2 to 6)

4 (2 to 6)

2 (2 to 4)

NS

NS

Actively involved joints

0 (0 to 1)

0 (0 to 1)

0 (0 to 0)

NS

NS

Affected joints

1 (0 to 3)

1 (0 to 2)

1 (0 to 3)

NS

NS

Arthritis severity index

2 (0 to 6)

2 (0 to 5)

1.5 (0 to 5)

NS

NS

Physician global assessment

1 (1 to 2)

1 (1 to 2)

1 (1 to 2)

NS

NS

Childhood Health Assessment Questionnaire score

0.0 (0.0 to 0.3)

0.0 (0.0 to 0.1)

0.0 (0.0 to 0.4)

NS

NS

Patients with uveitis

12 (16%)

16 (33%)

6 (23%)

NS

NS

Remission status at follow up

0.02

0.01

Current remission

43 (56%)

26 (54%)

21 (81%)

Active, but previous remission

27 (35%)

13 (27%)

1 (4%)

Continuously active

7 (9%)

9 (19%)

4 (15%)

Radiographic erosions grade III to IV

11 (14%)

8 (17%)

2 (8%)

NS

NS

Laboratory variables

NS

NS

Erythrocyte sedimentation rate (mm/hour)

6 (4 to 11)

8 (5 to 13)

5 (4 to 11)

NS

NS

C-reactive protein (mg/l)

5 (1 to 5)

5 (3 to 6)

5 (5 to 9)

<0.01

0.01

Antinuclear antibody positivity

33 (43%)

18 (38%)

11 (42%)

NS

NS

IgM-rheumatoid factor positivity

0

0

0

-

-


Included in this analysis are 151 patients with juvenile oligoarthritis. Values are expressed as number (%) or, for continuous variables, as median (interquartile range). aComparison of the high, medium and low genotype expression groups by means of the two-sided Fisher's exact test and Kruskal-Wallis test. bComparison of the high and medium genotype group versus the low genotype expression group by means of the two-sided Fisher's exact test and Mann-Whitney U-test. NS, not significant.

Dolman et al. Arthritis Research & Therapy 2008 10:R32   doi:10.1186/ar2386

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