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. Author manuscript; available in PMC: 2010 Sep 1.
Published in final edited form as: Optom Vis Sci. 2009 Sep;86(9):1096–1103. doi: 10.1097/OPX.0b013e3181b6210f

Table 3.

Number (%) of patients in each category of the composite measure of outcome, at 6- and 12-month follow-up visit.

Category OBVAT HBPP HBCVAT+ OBPT
Week 12 Masked Examination

Asymptomatic 33 18 12 16

6-month follow-up visit

Completed visit 31 16 9 15

Received additional treatment?
   No 31 (100) 15 (93.8) 9 (100) 14 (93.3)
   Yes 0 1 (6.2) 0 1 (6.7)

Symptom level
   Asymptomatic 28 (90.3) 10 (62.5) 8 (88.9) 12 (80.0)
   Symptomatic 3 (9.7) 6 (37.5) 1 (11.1) 3 (20.0)

Composite Outcome
   Successful 21 (67.7) 4 (25.0) 5 (55.6) 6 (40.0)
   Improved 7 (22.6) 7 (43.8) 3 (33.3) 5 (33.3)
   Non-responder 3 (9.7) 5 (31.2) 1 (11.1) 4 (26.7)

12-month follow-up visit

Completed visit 32 15 10 13

Received additional treatment?
   No 31 (96.9) 12 (80.0) 8 (80.0) 11 (84.6)
   Yes 1 (3.1) 3 (20.0) 2 (20.0) 2 (15.4)

Symptom level
   Asymptomatic 27 (84.4) 10 (66.7) 8 (80.0) 10 (76.9)
   Symptomatic 5 (15.6) 5 (33.3) 2 (20.0) 3 (23.1)

Composite outcome
   Successful 18 (56.3) 5 (33.3) 3 (30.0) 5 (38.5)
   Improved 10 (31.2) 5 (33.3) 5 (50.0) 4 (30.8)
   Non-responder 4 (12.5) 5 (33.3) 2 (20.0) 4 (30.8)

OBVAT: Office-based vergence/accommodative therapy with home reinforcement

HBPP: Home-based pencil push-up therapy

HBCVAT+: Home-based computer vergence/accommodative therapy and pencil push-ups

OBPT: Office-based placebo therapy with home reinforcement