Comparability of a provisioned device versus bring your own device for completion of patient-reported outcome measures by participants with chronic obstructive pulmonary disease: quantitative study findings

Journal of Patient-Reported Outcomes

Table 5 Screen size substudy descriptive statistics

Device	n	Mean (SD)	SE	95% CI
CAT^a
Laptop	19	17.8 (8.61)	1.98	(13.69, 21.99)
Smartphone	20	17.8 (9.11)	2.04	(13.49, 22.01)
Tablet	20	17.9 (8.98)	2.01	(13.70, 22.10)
Laptop versus Smartphone	19	0.1 (2.69)	0.62	(− 1.19, 1.40)
Laptop versus Tablet	19	− 0.1 (1.81)	0.42	(− 0.92, 0.82)
Smartphone versus Tablet	20	− 0.2 (1.81)	0.41	(− 1.00, 0.70)
E-RS: COPD^a
Laptop	20	22.0 (7.75)	1.73	(18.37, 25.63)
Smartphone	20	22.0 (7.62)	1.70	(18.43, 25.57)
Tablet	20	22.1 (8.06)	1.80	(18.28, 25.82)
Laptop versus Smartphone	20	0.0 (1.03)	0.23	(− 0.48, 0.48)
Laptop versus Tablet	20	− 0.1 (1.28)	0.29	(− 0.65, 0.55)
Smartphone versus Tablet	20	− 0.1 (1.32)	0.29	(− 0.67, 0.57)

Program: (t_icc_screen_anova.sas) (12FEB18:09:56:52)
Analysis datasets: _adpro
CI Confidence interval, E-RS: COPD Evaluating respiratory symptoms in COPD, SD Standard deviation, SE Standard error
^aThe E-RS: COPD is a total score derived from 11 items of the 14-item EXACT^®. It is scored as per the missing data and scoring rule specified in the user manual. A higher score on the E-RS: COPD relates to increased severity of respiratory condition. The CAT is an 8-item self-assessment measure with an additive total score. A higher score on the CAT relates to increased severity. Participants could skip CAT items