Psychometric properties of the medical outcomes study: social support survey among methadone maintenance patients in Ho Chi Minh City, Vietnam: a validation study

Khuong, Long Quynh; Vu, Tuong-Vi Thi; Huynh, Van-Anh Ngoc; Thai, Truc Thanh

doi:10.1186/s13011-018-0147-4

Table 2 Item distribution, internal consistency and test-retest reliability of the MOS-SSS

From: Psychometric properties of the medical outcomes study: social support survey among methadone maintenance patients in Ho Chi Minh City, Vietnam: a validation study

Item^b	Score [n (%)]^a					Mean (SD)	Item-total correlation	Cronbach alpha	ICC^d
Item^b	1	2	3	4	5
Tangible^c						66.7 (27.9)		0.97	0.73
Item 2: Help if you confined to bed	8 (2.7)	33 (11.0)	59 (19.7)	108 (36.0)	92 (30.6)	3.8 (1.0)	0.79		0.62
Item 5: Take you to the doctor	17 (5.7)	47 (15.7)	68 (22.7)	94 (31.3)	74 (24.6)	3.5 (1.2)	0.83		0.65
Item 12: Prepare meals for you	16 (5.3)	36 (12.0)	57 (19.0)	97 (32.3)	94 (31.4)	3.7 (1.2)	0.83		0.66
Item 15: Help you with daily chores	20 (6.7)	45 (15.0)	65 (21.7)	77 (25.6)	93 (31.0)	3.6 (1.3)	0.83		0.66
Emotional-informational^c						47.5 (24.3)		0.97	0.72
Item 3: Listen to you	24 (8.0)	56 (18.7)	112 (37.3)	82 (27.3)	26 (8.7)	3.1 (1.1)	0.88		0.72
Item 4: Give you good advice	37 (12.3)	48 (16.0)	117 (39.0)	81 (27.0)	17 (5.7)	3 (1.1)	0.85		0.67
Item 8: Give you information	23 (7.7)	70 (23.3)	111 (37.0)	78 (26.0)	18 (6.0)	3 (1.0)	0.85		0.67
Item 9: Someone to confide in	43 (14.3)	80 (26.7)	74 (24.7)	90 (30.0)	13 (4.3)	2.8 (1.1)	0.80		0.59
Item 13: Give advice you really want	43 (14.3)	72 (24.0)	111 (37.0)	59 (19.7)	15 (5.0)	2.8 (1.1)	0.85		0.52
Item 16: Share worries with you	37 (12.3)	68 (22.7)	106 (35.3)	72 (24.0)	17 (5.7)	2.9 (1.1)	0.85		0.65
Item 17: Turn to for suggestions	33 (11.0)	65 (21.7)	112 (37.3)	76 (25.3)	14 (4.7)	2.9 (1.1)	0.85		0.59
Item 19: Understand your problems	51 (17.0)	66 (22.0)	100 (33.3)	74 (24.7)	9 (3.0)	2.8 (1.1)	0.84		0.52
Positive social interaction^c						43.1 (25.5)		0.97	0.61
Item 7: Have a good time with you	37 (12.3)	79 (26.3)	108 (36.0)	65 (21.7)	11 (3.7)	2.8 (1.0)	0.77		0.57
Item 11: Get together for relaxation	36 (12.0)	91 (30.3)	100 (33.3)	57 (19.0)	16 (5.4)	2.8 (1.1)	0.77		0.49
Item 14: Help you get your mind off things	41 (13.7)	86 (28.7)	107 (35.7)	52 (17.3)	14 (4.6)	2.7 (1.1)	0.81		0.55
Item 18: Do something enjoyable with you	52 (17.3)	82 (27.3)	99 (33.0)	51 (17.0)	16 (5.3)	2.7 (1.1)	0.80		0.60
Affectionate^c						54.6 (27.4)		0.95	0.64
Item 6: Show you love and affection	22 (7.3)	42 (14.0)	96 (32.0)	99 (33.0)	41 (13.7)	3.3 (1.1)	0.79		0.62
Item 10: Give you comforting gestures	34 (11.3)	67 (22.3)	79 (26.4)	81 (27.0)	39 (13.0)	3.1 (1.2)	0.82		0.54
Item 20: Love and make you feel wanted	24 (8.0)	67 (22.3)	81 (27.0)	95 (31.7)	33 (11.0)	3.2 (1.1)	0.81		0.57
Overall^c						53.0 (22.9)		0.97	0.76

^a1 = None of the time; 2 = A little of the time; 3 = Some of the time; 4 = Most of the time; 5 = All of the time
^bItem 1 assesses the structural support (the number of close relatives and friends), and was not included in the analysis
^cScores were transformed to 100-point scale
^dAll ICCs were significant (p < 0.001)

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