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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: Ophthalmology. 2011 Jun 12;118(9):1859–1864. doi: 10.1016/j.ophtha.2011.02.026

Table 2:

The distribution of etiologic causes for abnormal head posture and their diagnostic timing.

N (%) Avg. age of presentation Avg. follow-up Avg. # of visits Avg. age AHP diagnosis
Strabismus 17 (26.6%) 22.1 mo.(1.8y) 63.4 mo.(5.3y) 12.9 33.5 mo.(2.8y)
Nystagmus 14 (21.8%) 16.1 mo.(1.3y) 77.3 mo.(6.4y) 9.7 43.6 mo.(3.6y)
Unclear 12 (18.8%) 32.6 mo.(2.7y) 90.0 mo.(7.5y) 12.0 57.9 mo.(4.8y)
Combined 9 (14.1%) 20.6 mo.(1.7y) 134.1 mo.(11.2y) 18.7 35.0 mo.(2.9y)
Refractive errors 5 (7.8%) 28.1 mo.(2.3y) 36.0 mo.(3y) 7.8 40.5 mo.(3.4y)
Ptosis 4 (6.3%) 67.0 mo.(5.6y) 66.0 mo.(5.5y) 10.5 73.5 mo.(6.1y)
Neck and spine abnormalities 2 (3.1%) 6.0 mo.(0.5y) 153.0 mo.(12.8y) 34.5 10.5 mo.(0.8y)
Hearing loss 1 (1.5%) 18.0 mo.(1.5y) 24.0 mo.(2y) 3.0 18.0 mo.(1.5y)

AHP= abnormal head posture