Evaluating Eye Drop Instillation Technique and Its Determinants in Glaucoma Patients
Table 5
Linear model of potential predictors of patients’ skill score of using eye drops (skill score system) (significant items were highlighted in bold).
Simple regression
Multiple regression
β (95% CI)
value
β (95% CI)
value
Demographic characteristics
Mean of age
−0.05 (−0.07, −0.03)
<0.001
−0.03 (−0.05, −0.01)
0.002
Male sex
−0.56 (−1.26, 0.14)
0.118
Education level
≤middle school
Reference
>middle school
0.88 (0.19, 1.56)
0.013
0.51 (−0.10, 1.11)
0.100
Location
Urban
Reference
Rural
0.31 (−0.51, 1.13)
0.453
Clinical characteristics
UCVA
Good (≥6/12)
Reference
Intermediate (<6/12 and ≥6/18)
0.50 (−0.71, 1.72)
0.416
0.10 (−0.94, 1.15)
0.843
Poor (<6/18)
−1.25 (−2.18, −0.33)
0.008
−1.24 (−2.03, −0.45)
0.002
Visual field stage
Early stage
Reference
Medium stage
−0.61 (−1.51, 0.28)
0.179
Late stage
0.22 (−0.59, 1.03)
0.588
Number of local eye drops
<4
Reference
≥4
0.40 (−0.30, 1.11)
0.263
Duration of using eye drops (y)
<1
Reference
1–5
0.70 (−1.01, 2.41)
0.421
Knowledge of using eye drops
Interval between each eye drops
5 minutes
Reference
10 minutes
−0.78 (−2.23, 0.67)
0.289
30 minutes
−3.69 (−7.66, 0.28)
0.068
Press dacryocyst area
Yes
3.70 (1.92, 5.48)
<0.001
1.64 (−0.12, 3.40)
0.068
No
Reference
Education/training experience of using eye drops
Having training of using eye drops
Yes
2.54 (1.45, 3.63)
<0.001
1.71 (0.62, 2.80)
0.002
No
Reference
SD: standard deviation; UCVA: uncorrected visual acuity. Use patient better-seeing eye’s UCVA in this item. Use patient better-seeing eye’s visual field in this item. All variables in the simple regression with were included in multiple regression.
