Table 2.

Social connectedness measures.

Measure name and citation	Construct measured	Psychometric data
National Social Life, Health, and   Aging Project Social Network   Module (NSL-SN) [36]	Social network density and quality (closeness)	Cornwell et al. reported that these measures of the social network were designed for use with older adults. In support of their construct validity, density and quality were significantly related, but the magnitude was small (r = .27), as would be expected.
Modified Cornell Services   Index (CSI) [51]	Formal and informal health/social services usage	Adequate test–retest (r = .54–1.00) and inter-rater (modal intraclass coefficient for all items was 1.00) reliabilities are reported.
Interpersonal Needs   Questionnaire (INQ) [33]	Thwarted belongingness (TB), perceived burdensomeness (PB)	Van Orden et al. reported high internal consistency coefficients for the thwarted belongingness (α = .85) and perceived burdensomeness subscales (α = .89). In support of construct validity, both subscales were found to positively correlate with suicidal ideation.