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Table 3 Quality score of the analyzed randomized controlled trials (RCTs) using manual therapies for treatment of CEH

From: Manual therapies for cervicogenic headache: a systematic review

Study A B C D E F G H I J K L M N O P Q Total
Piekartz and Lüdtke [30] 2 3 4 3 2 0 10 5 0 0 5 2 6 6 3 0 5 56
Nilsson [24] 2 2 4 3 4 0 10 5 5 0 0 2 4 4 3 0 5 53
Nilsson et al. [25] 2 2 4 3 4 0 10 5 5 0 0 2 4 4 3 0 5 53
Jull et al. [26] 2 5 4 3 4 0 10 5 5 5 5 2 8 8 5 5 5 81
Haas et al. [27] 2 4 4 3 4 0 10 5 0 0 5 2 6 0 3 5 5 58
Borusiak et al. [28] 2 2 4 0 4 0 10 0 5 5 5 2 6 0 0 0 5 50
Haas et al. [29] 2 4 4 3 4 0 10 5 0 5 5 2 6 0 3 5 5 63
  1. The letters correspond with letters from the criteria list (Table 2)