Skip to main content

Table 5 The results of DIF analysis with logistic regression

From: Item response analysis of the Geriatric Anxiety Inventory among the elderly in China: dimensionality and differential item functioning test

ItemSexSomatic Disease
StatisticpR2Effect sizeStatisticpR2Effect size
11.460.480.0015A3.660.160.0105A
20.920.630.0009A5.560.060.0162A
32.140.340.0026A1.940.380.0074A
43.060.210.0034A3.920.140.0118A
51.390.500.0018A0.150.930.0006A
63.610.160.0030A6.600.04a0.0142A
73.980.140.0038A0.760.690.0021A
83.960.140.0030A5.980.050.0125A
92.740.250.0020A3.050.220.0059A
103.860.150.0039A2.440.300.0071A
110.150.930.0001A5.320.070.0134A
124.020.130.0045A8.970.01a0.0289A
133.970.140.0040A6.000.04a0.0184A
143.790.150.0056A3.100.210.0151A
152.140.340.0037A0.500.780.0029A
161.360.500.0018A4.610.100.0173A
170.190.910.0004A0.220.900.0022A
184.330.110.0080A1.680.430.0091A
190.890.640.0014A1.130.570.0052A
206.010.04a0.0062A2.120.350.0061A
  1. Note. aindicated significance at 0.05 level. The DIF estimates are classified according to effect size as “A” (negligible effect), “B” (moderate effect), and “C” (large effect”)
\