|
Parameter
|
n (%) or mean ± SD or median (25th–75th IQR)
|
|---|
|
Hypocomplementaemiaa
|
|
At recruitment
|
150 (13.2 %)
|
|
Everb
|
275 (24.1 %)
|
|
Number of complement measurements per patient
|
2 (1–3)
|
|
1
|
400 (35.1 %)
|
|
2
|
265 (23.3 %)
|
|
3
|
196 (17.2 %)
|
|
4
|
129 (11.3 %)
|
|
5
|
85 (7.5 %)
|
|
6
|
50 (4.4 %)
|
|
7
|
14 (1.2 %)
|
|
8
|
1 (0.1 %)
|
|
Total number of complement measurements in data set
|
1893
|
|
Time interval between complement measurements, years
|
1.2 ± 0.4
|
-
aA low C3 and/or C4 result
-
bAt least one episode of hypocomplementaemia over the study period
