. 2018 Feb 28;13(2):e0192620. doi: 10.1371/journal.pone.0192620

Table 2. Results of regression analysis.

	Total cases	Inpatient cases	Day cases
Regressor	of cataract surgery	of cataract surgery	of cataract surgery
Regressor	Per 100,000	Per 100,000	Per 100,000
	inhabitants	inhabitants	inhabitants
% Population ≥ 65 years	71.4	29.6	10.2
% Population ≥ 65 years	(38.8)	(29.1)	(27.5)
Time effect	3.89	4.87	4.43
Time effect	(<0.001)	(<0.001)	(<0.001)
R²	0.903	0.910	0.879
Health care expenditure per capita ($)	–0.06	0.04	–0.01
Health care expenditure per capita ($)	(0.09)	(0.04)	(0.10)
Time effect	6.18	4.23	3.37
Time effect	(0.002)	(<0.001)	(0.472)
R²	0.897	0.910	0.879

Notes: Robust standard errors are given in parentheses under the coefficients, and p-values are given in parentheses under the F-statistics of the time effect. Total cases of cataract surgery include inpatient, day and outpatient cases.