From: A study of patient satisfaction after cataract surgery with implantation of different types of intraocular lenses
Number
Mean
SD
T-test
P-value
Access to medical care
NHI coverage
49
4.06
0.94
2.387
0.019
Balance billing
78
3.65
0.92
Product differentiation
3.79
0.95
−2.665
0.009
4.16
0.59