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Table 1 Characteristics of studies assessing the size of social networks including friendship networks

From: Social networks of patients with psychosis: a systematic review

No. Study description authors’ name, year, country Sample with psychosis Diagnostic criteria Participants and Setting Social network size assessment Minimum frequency of contact and/or timescale Type of social relationships considered Network components reported
1 Angermeyer and Klusmann, 1987, Germany [55] 30 RDC Recently discharged patients in community Interview schedule for the assessment of social relationships Once in the past week Family, other patients and professional helpers
2 Becker et al., 1998, United Kingdom (UK) [47] 129 ICD-10 Patients in community Social network achedule, SNS [35] Once in the previous month All relationships Relatives, friends, and other contactsa
3 Cohen and Sokolovsky, 1978, United States (USA) [31] 32 Clinical assessment Patients in community residences Semi-structured “Network Profile Questionnaire” Once per month in a preceeding 12 months Exclusively formal contacts excluded (i.e.with psychiatrists and social workers) Kin and non-kin
4 Cohen and Kochanowicz, 1989, USA [52] 47 DSM-III Psychiatric clinic outpatients Modified network analysis profile, NAP [30, 31] Once in previous 3 month once in 12 months for important persons All relationships Kin, non-kin and formal sector
5 Cohen et al., 1996, USA [64] 117 DSM-III-R Patients in community residences and psychiatric clinic outpatients Network analysis profile, NAP [30, 31] Notable interactionb within the past 3 months for non-kin; within 12 months for kin All relationships Formal and informal sectorc
6 Dozier et al., 1987, USA [65] 18 DSM-III Outpatients of the intervention programme for young adults Study specific semi-structured questionnaire Once in the past 2 weeks All important persons except hospital staff and other patients
7 Estroff et al., 1994, USA [48] 81 N/A Inpatients and patients in community Study specific semi-structured questionnaire All relationships Relatives, friends and mental health professionals
8 Famiyuwa and Olatokunbo, 1984, Nigeria [43] 85 Feighner criteria Outpatients of community based counseling service Study specific semi-structured questionnaire Twice per week On-going relationships with family and co-workers Family and co-workers
9 Hamilton et al., 1989, USA [56] 39 DSM-III Outpatients of mental health clinic for veterans Modified Pattison psychosocial kinship inventory, PPKI [36, 37] Subjectivelly important relationships Kin and non-kin
10 Harley et al., 2012, UK [13] 137 DSM-IV Patients in community Study specific semi-structured questionnaire Once per week over the past 3 months Friends defined as non kin, non-services providers with evidence of shared interests and activities Friends only
11 Hernando et al., 2002, Spain [58] 32 DSM-III-R Outpatients in mental health day centres Study specific semi-structured questionnaire All relationships Professionals and othersd
12 Horan et al., 2006, USA [54] 89 DSM-III-R and RDC Inpatients Study specific semi-structured questionnaire based on Hammer [41] and Randolph [42] 12 months Frequent or important relationships except those with treatment providers and persons of less than 10 years of age Patient is in conatc or close to,but less than 10-year-old and treatment providers Kin
13 Kauranen et al., 2000, Finland [50] 29 DSM-III-R Inpatients and outpatients Klefbeck’s social network map [38] _ All current relationships Family, friends, co-workers and formal sector
14 Lipton et al., 1981, USA [45] 30 RDC Inpatients Modified network analysis profile, NAP [30, 31] Once in the past year All relationships Kin, non –kin and formal sector
15 Meeks and Hammond, 2001, USA [57] 120 RDC Patients in community Modified network analysis profile, NAP [30, 31] Once in the past 3 months for non-kin; once per year for kin and service providers if important Persons known by name in kin, non-kin and service sector Kin, non-kin and service sector
17 Pessoa Moreno Macedo et al., 2013, Brazil [49] 17 ICD-10 Outpatients in community based services Semi-structured questionnaires based on Sluzki [40] Family, friends, community and work/study sector
16 Pernice-Duca, 2008, USA [44] 103 DSM-IV Patients in community participating in clubhouse programmes Social network analysis approach by McCallister and Fischer [32, 33] Important relationships Family, friends, professionals, clubhouse staff and peers
18 Sawicka et al., 2013, Poland [46] 105 ICD-10 Patients in community using home care services The map and the questionnaire of social support [39] Individuals with whom patient is in contact Persons in the same household, closest family, other relatives, colleagues, neighbours, other acquaintances, therapists, and other persons
19 Seidmann et al., 1987, USA [53] 15 DSM-III 2 years after 1st psychiatric hospitalisations Modified network analysis profile, NAP [30, 31] Once in the past 3 months All individuals known by name
20 Sibitz et al., 2010, Austria [59] 157 ICD-10 Inpatients and day clinic care outpatients A question about the number of friends Friends based on self-defintion Friends only
21 Thorup et al., 2007, Denmark [51] 578 ICD-10 Inpatients and outpatients Social network schedule, SNS [35] Once in the past month Friends based on self-defintion Friends only
22 Tolsdorf, 1976, USA [66] 10 N/A Inpatients Study specific semi-structured questionnaire Kin
23 Van Humbeeck et al., 2000, Belgium [67] 56 DSM-IV Patients in supported living community residences Modified social network scale by McCallister and Fischer [32, 33] and Fischer [34] Important formal and informal persons
  1. aOther contacts: nonfriends such as acquaintances, shopkeepers, health or social or other service staff
  2. bExamples of notable interaction: a 15 min conversation; a material exchange such as goods or money, or social outing
  3. cInformal sector: kin, friends and acquaintances
  4. dFriends, acquintances, neighbours