A Randomized Clinical Trial of a Care Recommendation Letter Intervention for Somatization in Primary Care

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Figure 1.
Physical Functioning Scores by Intervention Group for Multisomatoform Disorder Subjects.

Table 1.

Baseline Characteristics of Treatment Groups

	Abridged SomatizationDisorder (N = 183)		MultisomatoformDisorder (N = 111)		SomatizationDisorder (N = 88)
	Timing of Intervention		Timing of Intervention		Timing of Intervention
DiagnosticClassification	Delayed(n = 92)	Immediate(n = 91)	Delayed(n = 55)	Immediate(n = 56)	Delayed(n = 43)	Immediate(n = 45)
Note: All comparisons between immediate and delayed intervention statistically nonsignificant.
SD = standard deviation; PCS = physicial functioning and MCS = emotional functioning subscales of Short Form-36.
Age, years	47.5 (14.0)	47.6 (14.1)	45.4 (13.8)	47.7 (13.8)	45.5 (14.5)	48.2 (14.7)
Mean (SD)
% Minority	20	16	25	16	28	22
% Male	11	6	7.3	3.6	5	2
Hollingshead social class	3.6 (1.0)	3.4 (1.0)	3.4 (1.1)	3.3 (1.1)	3.2 (1.1)	3.2 (1.1)
Mean (SD)
% with any physical comorbidity	64	71	60	73	74	73
% with any psychiatric comorbidity	45	36	49	44	56	49
PCS scores Mean (SD)	44.3 (11.5)	42.4 (11.4)	42.4 (11.4)	41.3 (11.6)	42.2 (11.8)	40.3 (11.7)
MCS scores Mean (SD)	48.5 (9.2)	48.9 (9.2)	47.6 (9.8)	47.8 (9.9)	47.5 (9.7)	48.7 (9.6)

Table 2.

Differences Between Missing and Present Subjects at 12 and 24 Months

	12 Months		24 Months
Status	Missing(n = 37)	Present(n = 151)	Missing(n = 74)	Present(n = 114)
t-Test and χ² tests used to compare missing to nonmissing
* Baseline MCS scores for 24 month missing vs nonmissing, P = .04; all other P values > .10
SD = standard deviation; PCS = physicial functioning and MCS = emotional functioning subscales of Short Form-36
Age, years	48.5 (14.0)	47.1 (13.9)	45.5 (14.2)	48.6 (1.3)
Mean (SD)
% Minority	19	19	18	20
% Male	8	7	8	7
Hollingshead social class	3.6 (1.0)	3.5 (1.0)	3.4 (1.0)	3.5 (1.0)
Mean (SD)
% with physical comorbidity	73	66	66	68
% with psychiatric comorbidity	49	38	43	39
Baseline PCS scores	44.5 (12.4)	43.0 (11.3)	44.9 (11.6)	42.9 (11.5)
Mean (SD)
Baseline MCS scores*	48.2 (10.0)	48.9 (9.0)	47.0* (10.2)	49.9* (8.3)
Mean (SD)
% year 1 intervention	41	50	45	51