TABLE 3.

Time between onset of the disease and first blood sampling for patients with at least a fourfold IgG-PT increase and for patients with at least 100 U/ml in the first serum sample without a fourfold IgG-PT increase

Age	Patients with at least a fourfold IgG-PT increase				Patients with at least 100 U/ml in first serum sample without a fourfold IgG-PT increase
	No. of patients	Median (days)	Percentiles 2.5–97.5	Mean (days)	No. of patients	Median (days)	Percentiles 2.5–97.5	Mean (days)
0–5 mo	517	14	2–53	17.0	497	30	4–108	36.8
6–11 mo	144	14	2–61	16.8	305	29	2–105	35.4
1 yr	174	15	2–62	19.2	426	28	4–122	36.3
2 yr	195	15	4–88	19.6	763	30	6–109	38.1
3 yr	262	18	3–60	19.7	966	30	7–119	38.5
4 yr	362	21	5–55	21.9	1,499	31	7–112	39.0
5–9 yr	1,191	18	3–58	20.6	5,655	31	7–103	37.6
10–14 yr	327	18	4–61	21.3	2,180	31	7–111	40.0
≥15 yr	222	16	3–67	19.3	3,028	30	6–108	37.2
Total	3,394a	17	3–59	19.8	15,319	30	6–109	38.0

^an < 3,491 due to missing values for time of disease onset.