Glaucoma Characteristics and Influencing Factors during the COVID-19 Pandemic in the Huizhou Region

Table 1

Proportion of patients with glaucoma in the ophthalmology department of two hospitals during phases A and B.

Study site	Phase A, n (%)^b	Phase B, n (%)^b	RD (95% CI)^a; (%)	χ^2
Hospital 1 (N = 2937)	68 (5.01)	43 (2.72)	2.26 (0.86–3.67)	10.474	0.001
Hospital 2 (N = 7877)	136 (4.04)	85 (1.88)	2.16 (1.38–2.93)	32.909	<0.0001
Combined (N = 10814)	204 (4.32)	128 (2.10)	2.22 (1.95–2.92)	43.971	<0.001

Note. Proportion of patients with glaucoma (%) = number of patients with glaucoma/total number of outpatient visits to different study site of different phase × 100%. ^aRD = rate difference, 95% CI = 95% confidence interval. The 95% CI of RD was estimated using the Newcombe and Robert G method [16]. ^b, n(%) = the number and proportion of patients with glaucoma. Pearson’s chi-square test was used to determine the proportion of patients with glaucoma between phases A and B.