Of life. Soc Indic Res. 1997;42(1):21?9. 47. McIntosh CN. Report on the construct

Baum CF, ICG-001 mechanism of action Schaffer ME, Stillman S. Correlates of life satisfaction among the aged. J Gerontol. 1974;29(four):454?. 66. Perry CM, Johnson CL. Families and assistance networks amongst African American oldest-old. Int J Aging Hum Dev. 1994;38:41?0. 67. Keller-Cohen D, Fiori K, Toler A, Bybee D. Social relations, language and cognition inside the `oldest old'. Ageing Soc. 2006;26(04):585?05. 68. Guilley E, Pin S, Spini D, d'Epinay CL, Herrmann F, Michel J-P. Association amongst social relationships and survival of Swiss octogenarians. A five-year potential, population-based study. Aging Clin Exp Res. 2005;17(five):419?five. 69. Bonsang E. Does informal care from kids to their elderly parents substitute for formal care in Europe? J Wellness Econ.Of life. Soc Indic Res. 1997;42(1):21?9. 47. McIntosh CN. Report on the construct validity with the temporal satisfaction with life scale. Soc Indic Res. 2001;54(1):37?6. 48. Pavot W, Diener E. Overview in the satisfaction with life scale. Psychol Assess. 1993;5(2):164. 49. Angrist JD, Imbens GW, Rubin DB. Identification of causal effects making use of instrumental variables. J Am Stat Assoc. 1996;91(434):444?five. 50. Silverman P, Hecht L, McMillin JD. Modeling life satisfaction amongst the aged: a comparison of Chinese and Americans. J Cross Cult Gerontol. 2000;15(four):289?05. 51. Martikainen L. The quite a few faces of life satisfaction amongst Finnish young adults'. J Happiness Stud. 2009;10(six):721?7. 52. Zou X, Ingram P, Higgins ET. Social networks and life satisfaction: the interplay of network density and regulatory concentrate. Motiv Emot. 2015;39(five):693?13. 53. Staiger D, Stock JH. Instrumental variables regression with weak instruments. Econometrica. 1997;65(3):557?6. 54. Stock JH, Yogo M. Testing for weak instruments in linear IV regression, Identification and inference for econometric models: essays in honor of Thomas Rothenberg. 2005. 55. R er J, Mollenhorst G, Poortman A.-R. Loved ones and Friends: Which Varieties of Personal Relationships Go Together inside a Network? Soc Indic Res. 2016; 127(two):809?6. 56. Seeman TE, Berkman LF. Structural traits of social networks and their relationship with social assistance inside the elderly: who delivers assistance. Soc Sci Med. 1988;26(7):737?9. 57. Bound J, Jaeger DA, Baker RM. Difficulties with instrumental variables estimation when the correlation between the title= pnas.1602641113 instruments as well as the endogenous explanatory variable is weak. J Am Stat Assoc. 1995;90(430):443?0. 58. Baum CF, Schaffer ME, Stillman S. Instrumental variables and GMM: estimation and testing. Stata J. 2003;three(1):1?1. 59. Hausman JA. Specification tests in econometrics. Econometrica. 1978;46:1251?1. 60. Wu D-M. Option tests of independence among title= s11606-015-3271-0 stochastic regressors and disturbances. Econometrica. 1973;41:733?0. 61. Wooldridge J. Introductory econometrics: a modern approach. 2nd ed. New York: South-Western College Publishing; 2012. 62. Zellner A, Theil H. Three-stage least squares: simultaneous estimation of simultaneous equations. Econometrica. 1962;30:54?8. 63. Litwin H, Stoeckel K, Roll A, Shiovitz-Ezra S, Kotte M. Social network measurement in SHARE wave four. SHARE wave. 2013;4:18?eight. 64. George LK.