Table 7.

Comparison of baseline characteristics for subjects who continued to wear GPs for the entire three-year study compared to the subjects who switched to glasses or contact lenses during the study.

Characteristics at Baseline	Continued in GP	Switched to SCL or glasses	p-value
Age (years)	10.4 ± 1.2	10.5 ± 1.2	0.97*
Spherical equivalent (D)	−2.4 ± 0.8	−2.1 ± 1.0	0.29*
Gender (% female)	60.6	55.0	0.78+
Wearing time (hours per week)	84.9 ± 12.3	75.9 ± 14.0	0.02*
Visual acuity (logMAR)	−0.06 ± 0.09	−0.06 ± 0.08	0.91*
Vision (% pretty good or perfect)	100	94.7	0.38#
NEI-VFQ Ocular Pain subscale	84.8 ± 15.1	78.9 ± 20.9	0.26*
Comfort (% always or usually comfortable)	100	100
Insertion (% always or usually no problem)	78.1	47.1	0.05+
Removal (% always or usually no problem)	90.6	94.1	1.0#
Cleaning (% always or usually no problem)	53.1	52.6	1.0#
Itching (% sometimes, often, always)	18.2	40.0	0.08+
Redness (% sometimes, often, always)	21.1	26.3	0.74#
Burning (% sometimes, often, always)	0	15.0	0.05#
Tearing (% sometimes, often, always)	15.2	20.0	0.72#
Light sensitivity (% sometimes, often, always)	24.2	52.6	0.04+

^*p-value from t-test

⁺p-value from χ² test

^#p-value from Fisher’s Exact test