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. 2019 Sep 12;29(1):289–301. doi: 10.1007/s11136-019-02292-9

Table 5.

Binary logistic regression investigating analyses on difficulty in understanding TTO tasks by type of TTO task, interviewer, and educational level

Model 1 (n = 160)					Model 2 (n = 193)
Variable	OR	p value	95% Wald CI for OR		Variable	OR	p value	95% Wald CI for OR
Variable	OR	p value	Lower	Upper	Variable	OR	p value	Lower	Upper
Threshold	0.523	0.299			Threshold	0.521	0.270
Type of TTO task^a					Type of TTO task^a
Open-ended	2.350	0.090	0.875	6.314	Open-ended	2.390	0.084	0.889	6.426
					Modified open-ended	1.693	0.391	0.508	5.642
Interviewer^b					Interviewer^b
Interviewer 2	1.142	0.805	0.398	3.281	Interviewer 2	1.204	0.706	0.458	3.167
Interviewer 3	0.177	0.040*	0.034	0.921	Interviewer 3	0.283	0.053	0.079	1.018
Educational level^c					Educational level^c
Primary school	0.430	0.215	0.113	1.633	Primary school	0.409	0.126	0.130	1.285
Middle school	0.203	0.019*	0.054	0.767	Middle school	0.178	0.004*	0.055	0.578
High school and above	0.099	0.001*	0.025	0.391	High school and above	0.077	0.000*	0.021	0.284
Hosmer and Lemeshow test	0.867				Hosmer and Lemeshow test	0.678

OR odds ratio, CI confidence interval

*p < 0.05

^aReference group: iteration-based TTO task

^bReference group: interviewer 1

^cReference group: primary school and below