Table 3.

Independent samples t-tests comparing PROMIS-10 and RAND-36, between ‘paper-and-pencil’ and ‘telephone’ group

	‘Paper-and-pencil'		‘Telephone’		95% CI for mean difference	t-value (df)	P value
	Mean (SD)	n	Mean (SD)	n
PROMIS-10 PH	44.1 (10.1)	34	47.2 (9.5)	38	−7.67 to 1.57	−1.32 (70)	0.192
PROMIS-10 MH	45.6 (8.5)	36	53.4 (8.0)	38	−11.57 to –3.90	−4.02 (72)	0.001
RAND-36 PCS	48.7 (12.2)	36	51.0 (11.8)	38	−7.86 to 3.27	−0.82 (72)	0.414
RAND-36 MCS	34.7 (8.4)	36	37.7 (7.6)	38	−6.64 to 0.80	−1.56 (72)	0.122

MCS, mental component score; MH, mental health; PCS, physical component score; PH, physical  health; PROMIS-10, Patient-Reported Outcomes Measurement Information System 10-Question Short Form.