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Table 1 Characteristics of included studies

From: The prevalence and prognostic value of frailty screening measures in patients undergoing surgery for colorectal cancer: observations from a systematic review

Study Design Patient (n =) Country Frailty screening tool Prevalence of frailty (%) Timing of assessment Age (Median/ Mean; years) % Male/Female TNM Stage
Artiles-Armas et al. (2021,) [34] Prospective 149 Spain Clinical Frailty Scale 42 CSHA CFS ≥ 4) Pre-operative 75 64/36 I-IV
Bessems et al. (2021,) [33] Retrospective 132 Netherlands Geriatric 8 questionnaire 40 G8 ≤ 14) Pre-operative 78 58/42 I-IV
Chen et al. (2018,) [21] Retrospective 1928 USA Modified Frailty Index (MFI-5) 12 (MFI ≥ 2) Pre-operative 59 55/45 IV
Feliciano et al. (2020,) [22] Prospective 691 USA Fried Frailty phenotype 18 (Fried ≥ 3/5 criteria) Pre-operative 63 Female only NR
Gearhart et al. (2020,) [25] Retrospective 1676 USA Modified Frailty Index (MFI-5) 25 (MFI ≥ 2) Pre-operative 75 50/50 NR
Lo et al. (2020,) [23] Retrospective 81, 803 USA Modified Frailty Index (MFI-5) 20 (MFI ≥ 2) Pre-operative NR (59% ≥ 65) 50/50 I-IV
Miller et al. (2020,) [26] Retrospective 9,252 USA Modified Frailty Index (MFI-5) 15 (MFI ≥ 2) Pre-operative NR (25% ≥ 65) 58/42 I-IV
Mima et al. (2020, [35]) Retrospective 729 Japan Clinical Frailty Scale 35 (CSHA CFS ≥ 4) Pre-operative NR (46% ≥ 75 years) 53/47 I-III
Okabe et al. (2019,) [27] Prospective 269 Japan Clinical Frailty Scale 29 (CSHA CFS ≥ 4) Pre-operative 80 62/38 III-IV
Reisinger et al. (2015,) [28] Retrospective 310 Netherlands Groningen Frailty Indicator 25 (GFI ≥ 5) Pre-operative NR (51% ≥ 70) 50/50 II-IV
Richards et al. (2021,) [29] Prospective 86 New Zealand Edmonton Frailty Scale 14 (EFS ≥ 8) Pre-operative 76 50/50 I-IV
Souwer et al. (2018,) [30] Retrospective 139 Netherlands Geriatric 8 questionnaire 50 (G8 ≤ 14) Pre-operative 77.8 55/45 I-III
Suzuki et al. (2021,) [31] Retrospective 151 Japan Modified Frailty Index (MFI-11) 35 (MFI ≥ 3) Pre-operative 84 44/56 NR
Tamura et al. (2021,) [24] Prospective 500 Japan Geriatric 8 questionnaire 56 (G8 ≤ 14) Pre-operative 76 58/42 I-IV
Tan et al. (2012,) [32] Prospective 83 Japan Fried Frailty Phenotype 28 (Fried ≥ 3/5 criteria) Pre-operative 81.2 NR NR