Prevalence of impaired motor performance, as assessed by the Movement ABC, in VLBW children with impaired visual function
| Prevalence of motor impairment (ABC score >13) by group | χ2 | P value | |||||
|---|---|---|---|---|---|---|---|
| Impaired | Normal | ||||||
| Acuity: | |||||||
| at 6 m | 12/23 (56%) | 23/112 (20%) | 9.9 | 0.002 | |||
| at 0.3 m | 10/19 (53%) | 26/117 (22%) | 7.8 | 0.005 | |||
| Squint | 8/13 (61%) | 27/122 (22%) | 9.4 | 0.002 | |||
| Refractive error | 14/31 (45%) | 22/105 (21%) | 7.2 | 0.007 | |||
| Stereopsis | 20/50 (40%) | 15/85 (18%) | 8.2 | 0.004 | |||
| Contrast sensitivity (CPD=cycles per degree): | |||||||
| at 1.5 CPD | 9/21 (43%) | 27/114 (24%) | 3.3 | 0.07 | |||
| at 3 CPD | 10/23 (43%) | 26/112 (23%) | 4.0 | 0.04 | |||
| at 6 CPD | 21/40 (52%) | 15/95 (16%) | 19.4 | <0.0000 | |||
| at 12 CPD | 21/44 (48%) | 15/91 (16%) | 14.8 | 0.0001 | |||
| at 18 CPD | 24/50 (48%) | 12/85 (14%) | 18.4 | <0.0000 | |||