Table 4.

Total number of injections and vaccine doses (children’s age > 1 year)

	Controls (n = 1434)	AL (n = 696)	OR [95%CI](*)	ALL (n = 606)	OR [95%CI] (*)	AML (n = 76)	OR [95%CI] (*)
	n (%)	n (%)		n (%)		n (%)
Total number of injections
≥10	446 (31.1)	176 (25.3)	ref	148 (24.4)	ref	21 (27.6)	ref
9, 8 or 7	507 (35.4)	229 (32.9)	1.0 [0.8–1.3]	197 (32.5)	1.0 [0.7–1.3]	30 (39.5)	1.3 [0.7–2.3]
6, 5 or 4	380 (26.5)	246 (35.3)	1.3 [1.0–1.7]	223 (36.8)	1.4 [1.0–1.8]	18 (23.7)	0.9 [0.4–1.9]
3. 2 or 1	57 (4.0)	17 (2.4)	0.7 [0.4–1.3]	15 (2.5)	0.8 [0.4–1.5]	2 (2.6)	0.5 [0.1–2.5]
0	13 (0.9)	4 (0.6)	0.7 [0.2–2.2]	4 (0.7)	0.8 [0.3–2.7]	0 (0.0)
Missing data	31 (2.2)	24 (3.5)		19 (3.1)		5 (6.6)
Total number of vaccine doses
≥25	797 (55.6)	352 (50.6)	ref	302 (49.8)	ref	42 (55.3)	ref
24-20	322 (22.5)	197 (28.3)	1.1 [0.9–1.5]	181 (29.9)	1.2 [0.9–1.5]	12 (15.8)	0.7 [0.4–1.5]
19-15	180 (12.6)	85 (12.2)	1.1 [0.8–1.6]	72 (11.9)	1.2 [0.8–1.7]	12 (15.8)	0.9 [0.3–2.2]
14-0	104 (7.3)	38 (5.5)	0.8 [0.5–1.2]	32 (5.3)	0.8 [0.5–1.2]	5 (6.6)	0.7 [0.3–2.1]
Missing data	31 (2.2)	24 (3.5)		19 (3.1)		5 (6.6)

^*Non-conditional logistic regression adjusted on age and gender