Table 1

Efficacy and efficiency of the lean cataract pathway

	Traditional pathway n=591	Lean pathway n=616	p Value^††	p Value^‡‡
Efficacy
A. One-stop preassessments			<0.001^‡	<0.001^§
Actual care delivery^*	188 (31.8%)	362 (58.8%)
Expected care delivery^*	NA	616 (100.0%)
B. Formulating surgical care plan using the patient record only			<0.001^‡	<0.001^§
Actual care delivery^*	72 (12.2%)	418 (67.9%)
Expected care delivery^*	NA	558 (90.6%)
C. Next-day telephone review			<0.001^‡	<0.001^§
Actual care delivery^*	0 (0%)	367 (59.5%)
Expected care delivery^*	NA	502 (81.5%)
D. Final review by an optometrist			<0.001^‡	<0.001^§
Actual care delivery^*	0 (0%)	257 (41.7%)
Expected care delivery^*	NA	517 (83.9%)
Efficiency
1. No of hospital visits per patient			<0.001^¶	<0.001^**
Actual care delivery^†	5.7 (1.1)	4.4 (1.3)
Expected care delivery^†	NA	3.4 (0.6)
2. Amount of ophthalmologist's time spent per patient in minutes			<0.001^¶	<0.001^**
Actual care delivery^†	48.2 (2.2)	35.3 (6.7)
Expected care delivery^†	NA	28.6 (6.7)
3. No of patients treated, related to ophthalmologist's time needed to treat one patient in traditional pathway			<0.001^¶	<0.001^**
Actual care delivery^†	1.00 (0.0)	1.42 (0.3)
Expected care delivery^†	NA	1.76 (0.3)

Actual care delivery in the lean pathway (2007) is compared with (1) actual care delivery in the traditional pathway (2004) and with (2) expected care delivery in the lean pathway, that is, care according to decision rules and service specifications, as stated in the lean pathway design.
↵* Number and percentage
↵† Mean with SD
↵‡ χ²
↵§ McNemar
↵¶ Independent-samples t test
↵** Paired-samples t test
↵†† p Value of statistical testing between actual care delivery in the traditional pathway and actual care delivery in the lean pathway
↵‡‡ p Value of statistical testing between actual care delivery and expected care delivery in the lean pathway;
NA, not applicable.