Table 2.

Children’s risks (incidence proportions) of starting stimulant treatment in 2011, according to relative age in class, sociodemographic and family-related characteristics

	Children’s relative age in class
	Oldest third risk % (n/N)	Mid-third risk % (n/N)	Youngest third risk % (n/N)
Overall	1.20 (2867/238 763)	1.33 (3087/232 446)	1.41 (3602/255 559)
Sex
Boy	1.63 (1939/118 698)	1.77 (2058/116 315)	1.87 (2387/127 398)
Girl	0.77 (928/120 065)	0.89 (1029/116 131)	0.95 (1215/128 161)
Sex and age (years)
Boys 6 to 8	2.26 (772/34 128)	2.58 (871/33 825)	2.68 (980/36 540)
Boys 9 to 11	1.83 (559/30 577)	2.07 (620/29 884)	2.32 (763/32 852)
Boys 12 to 14	1.32 (375/28 437)	1.36 (382/28 072)	1.35 (400/29 651)
Boys 15 to 17	0.91 (233/25 556)	0.75 (185/24 534)	0.86 (244/28 355)
Girls 6 to 8	0.92 (307/33 492)	1.09 (352/32 436)	1.20 (424/35 398)
Girls 9 to 11	0.83 (259/31 054)	0.90 (267/29 563)	1.04 (342/32 794)
Girls 12 to 14	0.62 (181/29 178)	0.76 (216/28 390)	0.73 (222/30 425)
Girls 15 to 17	0.69 (181/26 341)	0.75 (194/25 742)	0.77 (227/29 544)
Ethnic sector
General	1.80 (2355/130 553)	1.98 (2487/125 357)	2.06 (2867/138 939)
Arab	0.37 (352/95 686)	0.42 (402/95 646)	0.52 (535/103 267)
Ultra-Orthodox Jewish	1.28 (160/12 524)	1.73 (198/11 443)	1.50 (200/13 353)
Birth order among siblings
First	1.46 (973/66 457)	1.53 (1149/75 196)	1.68 (1297/77 261)
Third to third	1.26 (1692/134 525)	1.35 (1689/124 906)	1.43 (2017/140 677)
Fourth or subsequent	0.53 (202/37 781)	0.77 (249/32 344)	0.77 (288/37 621)
Number of children in family
1 to 2	1.8 (716/39 830)	2.02 (804/39 747)	2.04 (916/44 865)
3 to 5	1.30 (1848/142 657)	1.38 (1973/142 653)	1.52 (2351/154 586)
6 or more	0.54 (303/56 276)	0.62 (310/50 046)	0.60 (335/56 108)
SES
Low	0.78 (1022/131 309)	0.85 (1076/127 185)	0.96 (1353/140 901)
Mid	1.63 (1230/75 264)	1.80 (1325/73 561)	1.90 (1521/80 221)
High	1.93 (614/31 842)	2.18 (683/31 387)	2.14 (728/34 047)

SES, socioeconomic status at the health clinic level.