Measurement and Analysis of Central Corneal Thickness at Different Postnatal Stages in Chinese Premature Infants

Table 7

CCT variation trend at 40 w, 52 w, and 64 w of PMA.

PMA	CCT < 566.66 µm (N = 36)	CCT ≥ 566.66 µm (N = 29)	t
40 w	527.72 ± 26.40	615.00 ± 34.36	−11.50	<0.001
52 w	508.53 ± 35.79	556.55 ± 40.77	−4.98	<0.001
64 w	506.58 ± 26.18	558.10 ± 44.01	−5.86	<0.001
F	5.536	20.189
	0.005	<0.001	—

F represented the test statistic in one-way ANOVA. value represented CCT < 566.66 µm vs CCT ≥ 566.66 µm at each PMA; value represented the CCT change trend at each PMA in CCT < 566.66 µm and CCT ≥ 566.66 µm.