From: Analysis of medical expenditure and socio-economic status in patients with ocular chemical burns in East China: a retrospective study
Group
total expense (thousand CNY)
group A (n = 9)
24.6 ± 16.5 (20)
group B (n = 12)
41.9 ± 29.5 (30)
group C (n = 16)
49.9 ± 48.3 (35)
group D (n = 19)
93.8 ± 91.0 (75) *
compared with group A