. 2012 May;129(5):e1112–e1120. doi: 10.1542/peds.2011-1601

TABLE 2.

RRs for Trajectory Group Membership

A: RRs for Communication Group Members of Assignment to Each Social and Repetitive Behavior Group, Relative to All Others
Communication trajectory group	Social Trajectory Group						Repetitive Behavior Trajectory Group
Communication trajectory group	Low	Low–Medium	Medium	Bloomers	Medium–High	High	Usually	Daily	When Stressed	Improving	Declining	Never
Low	6.08^a	1.87^a	0.58^a	0.22^a	0.17^a	0.10^a	3.22^a	1.32^a	0.72^a	0.35^a	0.79	0.66^a
Low–medium	2.21^a	2.00^a	0.93	0.41^a	0.40^a	0.17^a	1.66^a	1.39^a	0.81^a	0.48^a	1.12	0.76^a
Medium	0.59^a	1.22^a	1.36^a	0.50^a	0.92	0.50^a	0.76^a	1.16^a	0.97	0.80^a	0.85	1.06
Bloomers	0.28^a	0.88^a	1.10^a	2.58^a	0.79^a	0.46^a	0.86	0.81^a	1.08	1.08	1.37^a	1.05
Medium–high	0.12^a	0.42^a	1.15^a	1.72^a	1.79^a	1.49^a	0.43^a	0.78^a	1.12^a	1.67^a	1.10	1.18^a
High	0.06^a	0.14^a	0.63^a	1.88^a	1.97^a	5.25^a	0.36^a	0.52^a	1.34^a	1.80^a	0.93	1.24^a
B: RRs for Social Group Members of Assignment to Each Communication and Repetitive Behavior Group, Relative to All Others
Social trajectory group	Communication Trajectory Group						Repetitive Behavior Trajectory Group
Social trajectory group	Low	Low–Medium	Medium	Bloomers	Medium–High	High	Usually	Daily	When Stressed	Improving	Declining	Never
Low	5.29^a	1.95^a	0.64^a	0.27^a	0.15^a	0.06^a	3.07^a	1.26^a	0.65^a	0.28^a	0.75	0.84^a
Low–medium	2.23^a	2.17^a	1.22^a	0.86	0.43^a	0.12^a	1.98^a	1.43^a	0.82^a	0.66^a	0.95	0.66^a
Medium	0.52^a	0.92	1.40^a	1.14	1.16^a	0.58^a	0.71^a	1.05	1.14^a	0.72^a	1.09	0.96
Bloomers	0.23^a	0.44^a	0.55^a	2.75^a	1.53^a	1.83^a	0.46^a	0.92	1.12	1.78^a	0.97	0.94
Medium–high	0.16^a	0.39^a	0.92	0.76^a	1.68^a	2.15^a	0.38^a	0.64^a	1.16^a	1.35^a	1.03	1.44^a
High	0.10^a	0.19^a	0.55^a	0.46^a	1.36^a	4.19^a	0.27^a	0.51^a	0.99	2.25^a	1.12	1.52^a

RR statistics significant at 2-tailed P < .05.