Table 1 Pre vs. post-implementation appointment types
From: Using Lean Six Sigma techniques to improve efficiency in outpatient ophthalmology clinics
Pre-implementation (all visits) [n, %] | Pre-implementation (visits with valid data only) [n,%] | Pre-implementation pairwise p (all visits vs. valid only) | Patient in-clinic time (minutes) [median, Q1-Q3] | Post-implementation (all visits) [n,%] | Post-implementation (visits with valid data only) [n, %] | Post-implementation pairwise p (all visits vs. valid only) | Patient in-clinic time (minutes) [median, Q1-Q3] | Pairwise p (pre-implementation vs. post-implementation total cohort) | |
|---|---|---|---|---|---|---|---|---|---|
Cataract New | 107 (3.0%) | 60 (2.7%) | 0.442 | 188, 121–269 | 129 (3.3%) | 120 (3.4%) | 0.767 | 125, 84–179 | 0.186 |
Emergency referral | 368 (10.2%) | 214 (9.5%) | 0.343 | 119, 79–184 | 442 (11.5%) | 378 (10.8%) | 0.235 | 109, 70–159 | 0.013 |
Follow-up | 2455 (67.7%) | 1555 (69.4%) | 0.096 | 132, 89–210 | 2442 (63.4%) | 2249 (64.4%) | 0.193 | 105, 71–157 | *<0.001 |
Inpatient referral | 245 (6.8%) | 91 (4.1%) | *<0.001 | 213, 123–311 | 308 (8.0%) | 250 (7.2%) | 0.070 | 117, 67–220 | *0.006 |
New | 248 (6.8%) | 144 (6.4%) | 0.434 | 161, 106–252 | 290 (7.5%) | 263 (7.5%) | 0.984 | 132, 102–179 | 0.119 |
Post-op day one | 201 (5.5%) | 177 (7.9%) | *<0.001 | 75, 49–146 | 242 (6.3%) | 230 (6.6%) | 0.451 | 78, 64–104 | 0.068 |
Total | 3624 | 2241 | 131, 84–217 | 3853 | 3490 | 107, 71–162 |