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. 2013 Dec 4;15(12):e269. doi: 10.2196/jmir.2906

Table 2.

Questions with the same answers in both surveys by the same participants.

Question Questions by same person, n Questions with same answers, n (%) Survey method, median (interquantile range) Kappa/ICC (95% CI)



Face-to-face Text messaging
2 43 25 (58) 2.00 (1.00, 2.00) 2.00 (1.00, 2.00) .68 (0.43, 0.92)a
3 35 23 (66) 2.00 (1.00, 3.00) 3.00 (1.00, 3.00) .50 (0.21, 0.79)a
4 34 19 (56) 1.00 (1.00, 2.00) 1.50 (1.00, 2.00) .23 (–0.12, 0.58)a
5 29 18 (62) 6.00 (5.00, 6.00) 6.00 (5.00, 6.00) .53 (0.29, 0.76)b
6 29 19 (66) 7.00 (6.00, 8.00) 6.00 (6.00, 7.00) .72 (0.51, 0.86)b
7 31 22 (71) 18.00 (12.00, 24.00) 18.00 (12.00, 24.00) .69 (0.50, 0.83)b
8 33 28 (85) .76 (0.56, 0.96)c
Total 255 159 (62)

aFleiss-Cohen kappa

bICC

cSimple kappa