Social capital in ELSA-Brasil: test-retest reliability of the Resource Generator scale

To estimate the test-retest reliability of items of the Resource Generator scale for assessing social capital in the Brazilian Longitudinal Study for Adult Health (ELSA-Brasil).

METHODS:

The social capital was applied in a subsample of 281 participants from six ELSA investigation centers, on two occasions with an interval of seven to 14 days. The instrument consists of 31 items that represent concrete situations to evaluate the access to different types of resources. In addition, it evaluates the strength of ties (family, friends or acquaintances) for the available resources. Statistical analyses were performed through use of the kappa statistic (k) and prevalence-adjusted kappa (ka).

RESULTS:

A high frequency was found for social resources (above 50%). Regarding the presence or absence of resources, prevalence-adjusted reliability (ka) varied from 0.54 to 0.97. With regard to the source for the resource, the reliability estimates ranged from ka = 0.45 ("someone who has good contacts with the media") to ka = 0.86 ("someone who completed secondary education").

CONCLUSIONS:

The scale presentedadequate levels of reliability, which varied according to the type of resource.

Questionnaires, utilization; Reproducibility of Results; Validity of Tests; Validation Studies as Topic; Social capital

The authors declare that there are no conflicts of interest.

This manuscript was submitted for publication and underwent a peer review process as any other manuscripts submitted to this publication, and anonymity was guaranteed for authors and reviewers. Editors and reviewers declare no confl icts of interest that may affect the peer-review process.

SCIMAGO INSTITUTIONS RANKINGS

Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Educação em Ambiente e Saúde, Rio de Janeiro, RJ, BrasilFundação Oswaldo CruzBrasilRio de Janeiro, RJ, BrasilFundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Educação em Ambiente e Saúde, Rio de Janeiro, RJ, Brasil

Fundação Oswaldo Cruz, Escola Nacional de SaúdePública, Departamento de Epidemiologia e Métodos Quantitativos, Rio de Janeiro, RJ, BrasilFundação Oswaldo CruzBrasilRio de Janeiro, RJ, BrasilFundação Oswaldo Cruz, Escola Nacional de SaúdePública, Departamento de Epidemiologia e Métodos Quantitativos, Rio de Janeiro, RJ, Brasil

Universidade Federal Fluminense, Instituto de Saúde da Comunidade, Departamento de Planejamento em Saúde, Rio de Janeiro, RJ, BrasilUniversidade Federal FluminenseBrasilRio de Janeiro, RJ, BrasilUniversidade Federal Fluminense, Instituto de Saúde da Comunidade, Departamento de Planejamento em Saúde, Rio de Janeiro, RJ, Brasil

Fundação Oswaldo Cruz, Escola Nacional de Saúde Pública, Programa de Pós-Graduação de Epidemiologia em Saúde Pública, Rio de Janeiro, RJ, BrasilFundação Oswaldo CruzBrasilRio de Janeiro, RJ, BrasilFundação Oswaldo Cruz, Escola Nacional de Saúde Pública, Programa de Pós-Graduação de Epidemiologia em Saúde Pública, Rio de Janeiro, RJ, Brasil

Tables

Tables (3)

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Table 1
Comparisons between items in different versions of the Resource Generator Scale and ELSA.

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Table 2
Test-retest, description of the items and the link with the provider of the social capital resource (Resource Generator Scale) in ELSA-Brazil.

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Table 3
Estimates of test-retest reliability of the items on the scale of social capital providers (Resource Generator Scale), ELSA-Brazil.

Table 1 Comparisons between items in different versions of the Resource Generator Scale and ELSA.

Original Dutch version	Brazilian version	ELSA-Brazil version

Do you know anyone who...	Você conhece alguém que:	O(A) sr.(a) conhece alguém que...
1. Can repair a car, bike, etc	1. Pode consertar um carro, uma bicicleta, etc.	1. Possa consertar um carro, uma bicicleta, etc.
2. Owns a car	2. Possui um carro	2. Possua um carro
3. Is handy repairing household equipment	3. Tem habilidade para consertar equipamentos domésticos	3. Tenha habilidade para consertar equipamentos domésticos
4. Can speak and write a foreign language	4. Fala uma língua estrangeira (speaks a foreign language)	4. Fale uma língua estrangeira (speaks a foreign language)
5. Can work with a personal computer	5. Pode trabalhar com um computador	5. Possa trabalhar com um computador
6. Can play an instrument	6. Sabe tocar algum instrumento musical	6. Saiba tocar algum instrumento musical
7. Has knowledge of literature	7. Leia livros de literature (reads literature)	7. Leia livros de literature (reads literature)
8. Has senior high school education	8. Se formou no Ensino Médio	8. Se formou no Ensino Médio
9. Reads a professional journal	9. Leia revistas técnicas	9. Leia revistas profissionais (especializadas)
10. Is active in a political party	10. Seja ativista de algum partido político	10. Seja ativista de algum partido político
11. Owns shares for at least Dfl.10,000	11. Tenha mais de R$ 2.000,00 na poupança ou outro tipo de investimento (has more than R$ 2,000.00 in savings or other investment)	11. Tenha mais de R$ 2.000,00 na poupança ou outro tipo de investimento (has more than R$ 2,000.00 in savings or other investment)
12. Works at the town hall	12. Trabalhe na Prefeitura ou no governo do Estado (works in the town hall or state government)	12. Trabalhe na Prefeitura ou no governo do Estado (works in the town hall or state government)
13. Earns more than Dfl. 5,000 monthly	13. Ganhe mais de R$ 2.000,00 por mês (earns more than R$ 2,000.00 per month)	13. Ganhe mais de R$ 2.000,00 por mês (earns more than R$ 2,000.00 per month)
14. Owns a holiday home abroad	14. Tenha uma casa de campo (owns a house in the country)	14. Tenha uma casa de campo ou praia (owns a house in the country or at the beach)
15. Is sometimes in the opportunity to hire people	15. De vez em quando contrate pessoas para trabalhar	15. De vez em quando contrate pessoas para trabalhar
16. Knows a lot about governmental regulations	16. Conheça bastante sobre as leis e regulamentos do governo	16. Conheça bastante sobre as leis e regulamentos do governo
17. Has good contacts with a newspaper, radio or TV station	17. Tenha bons contatos com a imprensa ou com pessoas de radio ou televisão	17. Tenha bons contatos com a imprensa ou com pessoas de rádio ou televisão
18. Has knowledge about financial matters (taxes, subsidies)	18. Conheça bem assuntos de finanças	18. Conheça bem assuntos financeiros
19. Can find a holiday job for a family member	19. Pode arranjar um emprego temporário para um membro da família	19. Possa arranjar um emprego temporário para um membro da família
20. Can give advice concerning a conflict at work	20. Pode dar conselhos a respeito de teus conflitos no ambiente de trabalho	20. Possa dar conselhos a respeito de seus conflitos no ambiente de trabalho
21. Can help when moving house (packing, lifting)	21. Pode te ajudar a fazer uma mudança de casa (empacotar as coisas, ajudar a carregar)	21. Possa te ajudar a fazer uma mudança de casa (empacotar, ajudar a carregar)
22. Can help with small jobs around the house (carpeting, painting)	22. Pode te ajudar em pequenas tarefas domésticas. (can help with small jobs around the house)	22. Possa te ajudar em pequenas tarefas domésticas (Can help with small jobs around the house)
23. Can do your shopping when you (and your household members) are ill	23. Pode fazer compras para você se você estiver doente (can do your shopping if you are ill)	23. Possa fazer compras para o(a) sr.(a), se o(a) sr.(a) estiver doente (can do your shopping if you are ill)
24. Can lend you a large sum of money (Dfl. 10,000)	24. Pode te emprestar uma boa quantidade de dinheiro se você precisar (can lend you a large sum of money if you need it)	24. Possa lhe emprestar uma boa quantidade de dinheiro se o(a) sr.(a) precisar (can lend you a large sum of money if you need it)
25. Can provide a place to stay for a week if you have to leave your house temporarily	25. Pode te abrigar em casa por uma semana se você precisar	25. Possa te abrigar em casa por uma semana se o(a) sr.(a) precisar
26. Can give advice concerning a conflict with family members	26. Pode te dar conselhos a respeito de conflitos entre membros de tua família	26. Possa te dar conselhos a respeito de conflitos entre membros de sua família
27. Can discuss what political party you are going to vote for	27. Pode discutir com você sobre em que candidato ou partido votar nas eleições	27. Possa discutir com o(a) sr.(a) sobre candidato ou partido para votar nas eleições
28. Can give a good reference when you are applying for a job	28. Pode ter dar uma boa referencia quando você estiver procurando emprego	28. Possa dar boas referências sobre o(a) Sr.(a) quando estiver procurando emprego
29. Can babysit for your children	29. Pode tomar conta das crianças enquanto você estiver fora	29. Possa tomar conta das crianças enquanto o(a) Sr.(a) estiver fora
30. Can give advice on matters of law (problems with landlord, boss, municipality)	–	–
31. Can give medical advice when you are dissatisfied with your doctor	–	30. Possa facilitar uma internação hospitalar ou lhe conseguir a realização de um exame (can facilitate hospital admission or tests)
32. Has higher vocational education 33. Knows about soccer	–	–
	30. Pode conversar com você a respeito de assuntos muito importantes (can converse with you on important matters)	31. Possa conversar com o(a) sr.(a) a respeito de assuntos muito importantes (can converse with you on important matters)
	31. Que você possa visitar socialmente (festa, churrasco, baile etc.). (someone you can visit socially [party, barbecue, dance, etc.])	–

Table 2 Test-retest, description of the items and the link with the provider of the social capital resource (Resource Generator Scale) in ELSA-Brazil.

Items	Resource available? (% yes)	If yes, source of the resource (%)

		Family	Friend	Acquaintance
1. Can repair a bike or care	80.4	38.1	25.2	36.7
2. Has a car	100.0	87.2	10.3	2.5
3. Is handy at repairing household equipment	74.0	55.8	22.1	22.1
4. Speaks a foreign language	85.8	58.5	30.7	10.8
5. Works with a computer	97.9	74.5	20.7	4.7
6. Plays a musical instrument	87.5	58.1	29.7	12.2
7. Reads literature	86.9	73.6	22.2	4.2
8. Finished high school	98.9	91.4	6.5	2.2
9. Reads professional journals	80.4	69.9	21.7	8.4
10. Is a political activist	61.2	23.5	39.7	36.8
11. Has more than R$ 2,000.00 in savings	82.9	23.5	39.7	36.8
12. Works in the town hall or the state government	80.1	49.8	32.4	17.8
13. Earns more than R$ 2,000.00 per month	92.9	75.5	20.3	4.2
14. Has a house in the country or at the beach	91.1	55.1	34.0	10.9
15. Hires people	86.2	61.2	25.9	12.1
16. Knows about laws and regulations	77.6	50.5	33.9	15.6
17. Has good contacts in the media	57.7	21.0	48.8	30.2
18. Knows about financial matters	71.5	48.8	34.3	16.9
19. Can find a holiday job for a family member	51.6	34.5	43.4	22.1
20. Can give advice about work	82.6	42.2	49.6	8.2
21. Helps to move house	95.4	65.3	27.2	7.5
22. Helps with small household tasks	96.1	73.7	16.7	9.6
23. Does the shopping if you are ill	97.9	86.5	10.5	2.9
24. Can lend you a significant amount of money	68.7	75.0	22.4	2.6
25. Lets you stay with them for a week	96.8	85.7	13.2	1.1
26. Can give advice about family problems	86.2	58.5	37.8	3.7
27. Discuss politics and voting in elections	84.0	56.2	34.9	8.9
28. Provides an employment reference	96.6	45.7	46.8	7.4
29. Looks after the children	88.3	82.9	14.6	2.4
30. Talk about important topics	96.2	68.7	29.1	2.2
31. Facilitate hospital admission or test	77.2	46.5	41.5	12.0

Table 3 Estimates of test-retest reliability of the items on the scale of social capital providers (Resource Generator Scale), ELSA-Brazil.

Items	Resource available (yes/no)		Source of resource (family, friend or acquaintance )

	kappa ( k) 95%CI	ka ^a	kappa ( k) 95%CI	ka ^a

1. Can repair a bike or care	0.59 (0.45;0.70)	0.76	0.54 (0.45;0.63)	0.54
2. Has a car	—	—	0.51 (0.36;0.65)	0.85
3. Is handy at repairing household equipment	0.53 (0.40;0.64)	0.66	0.51 (0.40;0.59)	0.56
4. Speaks a foreign language	0.56 (0.41;0.69)	0.79	0.57 (0.48;0.67)	0.68
5. Works with a computer	0.35 (-0.01;0.66)	0.95	0.43 (0.30;0.54)	0.70
6. Plays a musical instrument	0.49 (0.31;0.64)	0.78	0.68 (0.57;0.76)	0.75
7. Reads literature	0.64 (0.49;0.77)	0.84	0.43 (0.31;0.55)	0.69
8. Finished high school	0.33 (-0.01;0.79)	0.97	0.35 (0.16;0.54)	0.86
9. Reads professional journals	0.62 (0.49;0.75)	0.78	0.59 (0.48;0.70)	0.73
10. Is a political activist	0.66 (0.56;0.74)	0.68	0.49 (0.38;0.61)	0.50
11. Has more than R$ 2,000.00 in savings	0.68 (0.55;0.79)	0.82	0.51 (0.36;0.65)	0.78
12. Works in the town hall or the state government	0.50 (0.36;0.62)	0.71	0.51 (0.41;0.60)	0.56
13. Earns more than R$ 2,000.00 per month	0.62 (0.38;0.79)	0.90	0.46 (0.34;0.58)	0.72
14. Has a house in the country or at the beach	0.66 (0.49;0.80)	0.88	0.59 (0.50;0.68)	0.66
15. Hires people	0.51 (0.38;0.65)	0.72	0.50 (0.38;0.60)	0.63
16. Knows about laws and regulations	0.60 (0.48;0.70)	0.74	0.51 (0.41;0.61)	0.57
17. Has good contacts in the media	0.67 (0.58;0.75)	0.68	0.43 (0.30;0.54)	0.45
18. Knows about financial matters	0.63 (0.52;0.73)	0.72	0.53 (0.42;0.62)	0.58
19. Can find a holiday job for a family member	0.54 (0.45;0.64)	0.54	0.54 (0.42;0.66)	0.56
20. Can give advice about work	0.46 (0.32;0.60)	0.70	0.46 (0.35;0.56)	0.55
21. Helps to move house	0.24 (-0.02;0.48)	0.88	0.47 (0.37;0.57)	0.63
22. Helps with small household tasks	0.62 (0.31;0.84)	0.94	0.47 (0.36;0.57)	0.69
23. Does the shopping if you are ill	0.54 (-0.01;0.87)	0.96	0.49 (0.34;0.64)	0.83
24. Can lend you a significant amount of money	0.66 (0.55;0.75)	0.71	0.62 (0.47;0.76)	0.80
25. Lets you stay with them for a week	0.54 (0.20;0.79)	0.94	0.53 (0.38;0.67)	0.83
26. Can give advice about family problems	0.37 (0.19;0.53)	0.75	0.47 (0.37;0.58)	0.62
27. Discuss politics and voting in elections	0.59 (0.44;0.71)	0.78	0.58 (0.48;0.67)	0.66
28. Provides an employment reference	0.27 (-0.01;0.58)	0.91	0.39 (0.30;0.49)	0.49
29. Looks after the children	0.50(0.32;0.65)	0.80	0.52 (0.36;0.66)	0.81
30. Talk about important topics	0.62(0.33;0.84)	0.92	0.48 (0.36;0.59)	0.67
31. Facilitate hospital admission or test	0.64(0.52;0.74)	0.75	0.61 (0.51;0.71)	0.66

^a Kappa adjusted for prevalence.

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Social capital in ELSA-Brasil: test-retest reliability of the Resource Generator scale

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[1] The authors declare that there are no conflicts of interest.

This manuscript was submitted for publication and underwent a peer review process as any other manuscripts submitted to this publication, and anonymity was guaranteed for authors and reviewers. Editors and reviewers declare no confl icts of interest that may affect the peer-review process.