Comparison of outcomes after anterior cervical discectomy and fusion with and without a cervical collar: a systematic review and meta-analysis

Table 1 Characteristics of included studies

Author (year)	Country	Study type	Number of Samples	Gender (male)	Average age	Follow-UP (months)	Surgical level	Outcomes
Author (year)	Country	Study type	CC/N-CC	CC /N-CC	CC /N-CC	CC /N-CC	Surgical level	Outcomes
Campbell (2008)¹¹	USA	RCT	149/108	65/53	44.3/43.3	24/24	1	1,2,3,4
Scerrati (2019)¹²	Italy	Cohort	36/36	17/18	48/48	12/12	1–2	1,4
Abbott (2013)¹³	Sweden	Cohort	17/16	9/11	53.4/47.3	24/24	–	1,2,3,4
Overley (2020)¹⁴	USA	RCT	22/22	12/12	55.2/50.1	12/12	1–2	1,4

Outcomes:1. Neck Disability Index, 2. Short Form 36, 3. cervical range of motion, 4. fusion rate
ZP: cervical collar ACP: no cervical collar RCT: Randomized controlled trial

ISSN: 1749-799X