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Table 1 Methodological quality ratings based on AMSTAR II (k = 60)

From: A comprehensive meta-review of systematic reviews and meta-analyses on nonpharmacological interventions for informal dementia caregivers

 AMSTAR II itemsa
12b34c567c89ib9iib1011ib11iib1213b1415c16
Abrahams et al., 2018 [14]10.50011001900900101
Backhouse et al., 2017 [15]10.500.51100.50.5900911111
Bernardo et al., 2018 [16]0000.50000.50009990090
Boots et al., 2014 [17]00.500.511011009991001
Brodaty & Arasaratnam, 2012 [18]00.51001001101110011
Chien et al., 2011 [19]10.500110010.500000111
Clarkson et al., 2018 [20]1110.5110010.509990091
Collins & Kishita, 2019 [21]10.510.511010000010111
Cooper et al., 2007 [22]00.5000100.50009990000
*Corbett et al., 2012 [23]00.500.510111901900091
Dam et al., 2016 [24]10.50011010.50.509990091
Deeken et al., 2018 [25]10.5001100.51900900101
Egan et al., 2018 [26]01001000.51109990090
Eggenberger et al., 2013 [27]10.510.511000.50.509990091
Elvish et al., 2013 [28]00101100.51109990090
Gallagher-Thompson & Coon, 2007 [29]000010019909900090
Godwin et al., 2013 [30]00.50011001909990091
Greenwood et al., 2016 [31]00.510.5110100.509990091
Hopkinson et al., 2019 [32]10.510.511011100011111
Hurley et al., 2014 [33]00.500.50100.510.509990090
Jensen et al., 2014 [34]10.500.51100.51910911911
Jütten et al., 2018 [35]101011010000000111
Kaddour et al., 2019 [36]1100.51100.50900900111
Kishita et al., 2018 [37]10.500.51110.50900900101
Kor et al., 2018 [38]10.5100100.51100001101
Lamotte et al., 2017 [39]10.50000010009990090
Laver et al., 2017 [40]10.50011001900900101
Li et al., 2013 [41]00.500.50100.50.5900900101
*Lins et al., 2014 [42]10.500.5111110.511101101
*Liu et al., 2017 [43]10.5001100.51901900101
Llanque & Enriquez, 2012 [44]000000000009990091
Maayan et al., 2014 [45]10.500.511111910901111
McKechnie et al., 2014 [46]10.5001000.51109991091
Morris et al., 2018 [47]10.510.51100.51109990091
Nguyen et al., 2019 [48]10.5101100.50.50.501100110
Olazarán et al., 2010 [49]10.500.511000901911111
Orgeta et al., 2014 [50]10.50011111900900101
Parra-Vidales et al., 2017 [51]1000.51000.50009990090
*Petriwskyj et al., 2016 [52]10.510.50110.50.50.509991091
Piersol et al., 2017 [53]00.5101100.51109990090
Pinquart & Sörensen, 2006 [12]0.50.510.511010011100101
Powell et al., 2008 [54]0.500011000009990090
Rausch et al., 2017 [55]00.500.51100.51109991091
Schoenmakers et al., 2010 [56]0.50.500.51000.50.50.500000111
Scott et al., 2016 [57]00.510.51100.51100011101
Selwood et al., 2007 [58]00.5000100.50009990091
Smith et al., 2014 [59]00.50100010009990091
Smits et al., 2007 [60]00.500.51100.51109990090
Tang et al., 2016 [61]00.50010010.50.509990091
*Thompson et al., 2007 [62]00.500.51100.51901911001
Tretteteig et al., 2016 [63]00.51000019009990091
Tyack et al., 2017 [64]00.5000100.50.50.509990091
Vandepitte et al., 2016 [65]00.510.51100.50.50.509990091
Vandepitte et al., 2016 [66]10.510.51100.51109991091
*Vernooij-Dassen et al., 2011 [67]0.510111110.5901901111
Waller et al., 2017 [68]00.510.51100.51109991091
Weinbrecht et al., 2016 [69]0.50.500.51100.51900900101
Williams et al., 2019 [70]10.510.50000.51900900111
*Wilson et al., 2017 [71]10.50011000.50.509991091
Ying et al., 2018 [72]10.50011001109990091
Totald3553203346477474328494817241448
  1. 0 = no; 0.5 = partial yes; 1 = yes; 9 = others, e.g., no meta-analysis. Articles with the publication year of 2019 were e-published within the search period
  2. aFor AMSTAR II items, 1 = covering PICO (participants, intervention, comparator group, outcome) in inclusion criteria; 2 = following review protocol; 3 = study design selection; 4 = literature search strategy; 5 = duplicated coding for study selection; 6 = duplicated coding for data extraction; 7 = justification of excluded papers; 8 = description of included studies; 9i = assessment of risk of bias (ROB) of RCT; 9ii = ROB of NRSI; 10 = reporting study funding source; 11i = using appropriate statistical combination method in RCT; 11ii = using appropriate statistical combination method in NRSI; 12 = ROB impact on meta-analysis; 13 = discussing of ROB impact; 14 = addressing heterogeneity; 15 = consideration of publication bias; 16 = reporting conflict of interest
  3. bCritical domains; ccritical domains applicable for systematic reviews (without meta-analysis) only. The high- (weakness in ≤1 non-critical domain) or moderate- (weakness in ≥2 non-critical domains) quality reviews are marked by an asterisk
  4. dThe total number of “partial yes” and “yes” was summed