units. The scales were broken down in this way because the

patients' psychosocial status was not adequately captured in

evaluation by the four categories of the continuums. No data

were on the reliability of the index with the alteration was

available.

 Three groups of vulnerability scales were selected for

additional study. Each of these clusters consisted of the

combined evaluation of three of the scales from the index.

They were selected and grouped on the basis of the relation-

ships that appear to exist between these psychosocial states.

However, no estimates of the reliability of the clusters were

available.

 The Index of Social Position. Information collected in

the interview on education and occupation was combined to

form a measure of socioeconomic status according to the

methods set forth by Hollingshead (1957) for the Two Factor

Index of Social Position. Scale scores for occupation and

education were based on (a) the occupation of the head of the

household and (b) the amount of formal schooling he or she

had received. If the head of the household was retired or

deceased, the occupation of that person prior to retirement

or death was used.

 The first factor, occupation, was scaled according to a

system of scores developed by the author. Education was

scaled according to seven categories. The two factors were

combined by weighing the individual scores from the scale

positions with weights determined by multiple correlation