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Table 3 The prevalence of FOG in Parkinson’s disease reported in these literatures

From: The prevalence of freezing of gait in Parkinson’s disease and in patients with different disease durations and severities

StudyFOG, % ( n of freezer/n of PD patients)
In general PD patientsDuration < 5 yearsDuration ≥ 5 yearsDuration ≥ 10 yearsH&Y ≤ 2.5H&Y > 2.5
Margolesky et al [36]26.5% (27/102)     
Mckay et al [46]40.0% (26/65)c   33.3% (15/45)55.0% (11/20)
Mancini et al [40]26.6% (25/94)a     
Djaldetti et al [37]34.8% (15/41) 34.8% (15/41)   
Ehgoetz Martens et al [38]41.6% (92/221)     
Kader et al [44]56.8% (138/243)a     
Sutter et al [45]41.4% (46/111)a   37.0% (34/92)63.2% (12/19)
Forsyth et al [43]39.0% (30/82)a     
Ricciardi et al [41]55.8% (24/43)*     
Vervoort et al [42]22.4% (17/76)a     
Shin et al [35]38.6% (54/141)29.2% (21/73)48.4% (31/64)59.1% (13/22)  
Allen et al [21]49.4% (114/231)     
Amboni et al [11]54.8% (325/593)a27.4% (48/175)65.8% (271/412)78.3% (148/189)35.3% (124/351)82.9% (194/234)
Forsaa et al [22]27.2% (63/232) b  62.5% (145/232)  
Gazibara et al [23]36.7% (110/300)     
Lieberman et al [24] 12.7% (27/212)    
Lindholm et al [25]41.1% (58/141)a     
Walton et al [26]42.4% (86/203) a     
Bohnen et al [8]14.0% (20/143)     
Ou et al [27]46.6% (221/474) a36.1% (108/299)64.6% (113/175) 33.5% (115/343)82.2% (106/129)
Perez-Lloret et al [28]38.2% (257/672) b25.4% (85/335)51.0% (172/337) 31.5% (174/553)60.0% (150/250)
Auyeung et al [10]   86.5% (148/171)  
Contreras et al [29]44.4% (71/160)a     
Garcia-Ruiz et al [30] 4.4% (2/45)44.4% (20/45)68.9% (31/45)  
Josiah et al [31]41.5% (380/916)b     
Coelho et al [32]   62.0% (31/50) 62.0% (31/50)
Moore et al [9]55.1% (65/118) a     
Giladi et al (2001)    7.1% (57/800) 
Giladi et al (2001)  53.5% (92/172) 22.2% (10/45)63.8% (81/127)
  1. FOG-Q freezing of gait questionnaire, UPDRS unified Parkinson’s disease rating scale, MDS-UPDRS movement disorder society revised Unified Parkinson’s Disease Rating Scale, FOG freezing of gait, PD Parkinson’s disease, H&Y Hoehn and Yahr staging
  2. aAccording to the FOG-Q and new FOG-Q
  3. bAccording to UPDRS and MDS-UPDRS
  4. cAccording to the FOG-Q or UPDRS