Xuxi Zhang

Table 3 Convergent and divergent validity: correlations of frailty domains with the alternative measures (n=2250) (Continued) Domain Score of alternative measures Population Full TFI score Physical domain score Psychological domain score Social domain score r  P ‐ value * r † P ‐ value * r † P ‐ value * r † P ‐ value * Psychological domain Mental well ‐ being score (MHI ‐ 5) Total ‐ 0.648 P <.001 ‐ 0.496 P <.001 ‐ 0.659 P <.001 ‐ 0.325 P <.001 Spain ‐ 0.612 P <.001 ‐ 0.437 P <.001 ‐ 0.636 P <.001 ‐ 0.337 P <.001 Greece ‐ 0.564 P <.001 ‐ 0.411 P <.001 ‐ 0.571 P <.001 ‐ 0.269 P <.001 Croatia ‐ 0.671 P <.001 ‐ 0.540 P <.001 ‐ 0.632 P <.001 ‐ 0.331 P <.001 The Netherlands ‐ 0.581 P <.001 0.365 P <.001 ‐ 0.634 P <.001 ‐ 0.392 P <.001 The United Kingdom ‐ 0.598 P <.001 ‐ 0.452 P <.001 ‐ 0.644 P <.001 ‐ 0.279 P <.001 Social domain Loneliness score (short ‐ JG) Total 0.579 P <.001 0.404 P <.001 0.478 P <.001 0.521 P <.001 Spain 0.511 P <.001 0.313 P <.001 0.469 P <.001 0.471 P <.001 Greece 0.504 P <.001 0.312 P <.001 0.395 P <.001 0.522 P <.001 Croatia 0.517 P <.001 0.339 P <.001 0.453 P <.001 0.483 P <.001 The Netherlands 0.569 P <.001 0.334 P <.001 0.437 P <.001 0.622 P <.001 The United Kingdom 0.551 P <.001 0.372 P <.001 0.460 P <.001 0.514 P <.001 TFI, Tilburg Frailty Indicator; HRQoL, Health ‐ Related Quality of Life; SF ‐ 12, 12 ‐ item Short form; PCS, Physical Component Summary summarized by the SF ‐ 12; MCS, Mental Component Summary summarized by the SF ‐ 12; GARS, 18 ‐ item Groningen Activity Restriction Scale; GARS  ‐ ADL, 11 ‐ item subscale of the 18 ‐ item Groningen Activity Restriction Scale to measure independence of Activities Of Daily Living; MHI ‐ 5, full 5 ‐ item mental well ‐ being scale of the 36 ‐ Item Short Form Survey; short ‐ JG, 6 ‐ item version of the De Jong Gierveld loneliness scale Missing items: SF ‐ 12 = 112; GARS = 4; GARS  ‐ ADL = 5; MHI ‐ 5 = 22; short ‐ JG = 27 * One ‐ tailed P value. † Highest value of Pearson correlation coefficient in the three domains of frailty in bold. 88 Chapter 4