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Table 1 Characteristics of included studies

From: Association between periodontitis and peripheral artery disease: a systematic review and meta-analysis

Study (Author, Year) Country Study population Study Design PADa patients Control
Number (M/F)b Age (SDc or Range) Number (M/F) Age (SD or Range)
Aoyama et al. 2017 [22] Japan hospital-based cross-sectional 34 (23/11) 65.6 ± 11.8 956 (693/263) 64.4 ± 13.0
Çalapkorur et al. 2017 [34] Turkey hospital-based cross-sectional 40 (32/8) 60.45 ± 9.94 20 (18/2) 57.40 ± 11.16
Ahn et al. 2016 [27] South Korea population-based case-control 72 (28/44) NRd 1271 (473/798) NR
Soto-Barreras et al. 2013 [26] Mexico hospital-based case-control 30 (8/22) 61.86 ± 8.49 30 (9:21) 63.23 ± 9.06
Chen et al. 2008 [30] Japan hospital-based case-control 25 (21/4) 67.6 ± 10 32 (28/4) 63.1 ± 10
Bloemenkamp et al. 2002 [33] Netherlands population-based case-control 212 (0/212) 48.2 ± 7.0 475 (0/475) 45.5 ± 8.1
Mendez et al. 1998 [25] USA population-based cohort 80 (80/0) 44.2 (29–62) 1030 (1030/0) 42.7 (23–80)
  1. aPAD, peripheral arterial disease
  2. bM/F, male/female
  3. cSD, standard deviation
  4. dNR, not report