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Table 2 ISP-D test-retest diagnosis reliabilities by test-retest time interval

From: Web-based tools can be used reliably to detect patients with major depressive disorder and subsyndromal depressive symptoms

(A)Within 2 weeks of test-retest time interval      
  ND SSD MinD MDD Total no.
ND 12 2 0 0 14
SSD 0 8 0 1 9
MinD 3 0 0 2 5
MDD 1 0 1 29 31
Total no. 16 10 1 32 59
Weighted κ 0.801     
(B) Between 2 and 4 weeks of test-retest time interval      
  ND SSD MinD MDD Total no.
ND 21 4 2 4 31
SSD 7 9 2 5 23
MinD 2 1 2 2 7
MDD 5 2 2 16 25
Total no. 35 16 8 27 86
Weighted κ 0.432     
(C) Greater than 4 weeks of test-retest time interval      
  ND SSD MinD MDD Total no.
ND 4 4 0 2 10
SSD 2 7 0 0 9
MinD 1 1 2 0 4
MDD 0 3 4 9 16
Total no. 7 15 6 11 39
Weighted κ 0.509     
  1. ISP-D: Internet-based Self-assessment Program for Depression; MDD: major depressive disorder; MinD: minor depressive disorder; SSD: subsyndromal depressive disorder; ND: no depression specified.