Table 1

Analysis of variance test on ranks comparing median biometric measurements of anterior chamber angle and anterior segment parameters

ParameterMedian (IQR)P value*Pairwise comparisons†
TPFPFNTN
n=271n=77n=12n=224
Anterior chamber angle
 AOD5000.14 (0.09)0.19 (0.13)0.17 (0.05)0.28 (0.12)<0.001TP <FN<FP<TN
 AOD7500.18 (0.11)0.26 (0.19)0.21 (0.15)0.41 (0.21)<0.001TP <FN<FP<TN
 TISA5000.07 (0.05)0.09 (0.04)0.09 (0.09)0.12 (0.06)<0.001TP <FN=FP<TN
 TISA7500.11 (0.07)0.15 (0.08)0.14 (0.10)0.21 (0.10)<0.001TP <FN=FP<TN
 SSA50015.23 (9.01)19.47 (11.62)15.66 (7.72)28.29 (10.94)<0.001TP=FN<FP<TN
 SSA75013.39 (8.50)18.46 (13.00)14.01 (10.82)26.48 (12.00)<0.001TP=FN<FP<TN
Anterior segment
 IA1.48 (0.31)1.49 (0.29)1.53 (0.21)1.53 (0.28)0.036TP=FP<FN=TN
 IC0.30 (0.12)0.25 (0.13)0.25 (0.13)0.20 (0.14)<0.001TP >FP=FN>TN
 ACD2.14 (0.30)2.33 (0.35)2.47 (0.37)2.69 (0.41)<0.001TP <FP=FN<TN
 LV0.77 (0.31)0.67 (0.30)0.53 (0.40)0.41 (0.29)<0.001TP >FP=FN>TN
 ACW11.36 (0.48)11.39 (0.55)11.45 (0.42)11.68 (0.63)<0.001TP=FP=FN<TN
 PD3.79 (1.06)3.68 (1.14)3.83 (1.20)3.68 (1.03)0.880TP=FP=FN=TN
 ACA14.5 (2.94)16.66 (3.02)17.55 (2.27)19.96 (4.80)<0.001TP <FP=FN<TN
  • Boldface indicates significant at p<0.05.

  • *P values were calculated using Kruskal-Wallis test.

  • †Pairwise comparisons performed using Dunn’s test adjusting for multiple comparisons.

  • ACA, anterior chamber area; ACD, anterior chamber depth; ACW, anterior chamber width; AOD500/750, angle opening distance 500/750 μm from the scleral spur; FN, false negative; FP, false positive; IA, iris area; IC, iris curvature; IT750/2000, iris thickness 750/2000 um from the scleral spur; LV, lens vault; PD, pupillary diameter; SSA, scleral spur angle; TISA500/750, Trabecular-iris space area 500/750 um from the scleral spur; TN, true negative; TP, true positive.