Table 4.

Percentage of Individuals with Complete Paraplegia Who Converted to Incomplete Status during the First Post-Injury Year

Authors/year	NLI	Initial exam	Follow-up exam	Sample size (N)	Overall conversion (%)	AIS A to B (%)	AIS A to C (%)	AIS A to D (%)
35Waters et al. 1992	T2–L2	≤30 d	1 y	148	4.0	NR	NR	NR
56Fawcett et al. 2007a	Paraplegia	≤30 d	1 y	135	12.6	5.9	4.4	2.2
62Harrop et al. 2011a	T4–T9	≤24 h	1 y	31	3.2	0	0	3.2
	T10–T12			18	5.6	0	5.6	0
	L1 and below			3	66.7	33.3	33.3	0
41Zariffa et al. 2011b	T2–T12	≤30 d	48 w	209	18.2	7.7	5.7	4.8
	T2–T5			74	9.5	4.1	4.1	1.4
	T6–T10			63	15.9	3.2	7.9	4.8
	T10–T12			72	29.2	15.3	5.6	8.3
61Lee et al. 2016c	T2–T12	≤7 d	1 y	194	15.5	7.7	3.1	4.6
21Kirshblum et al. 2016c	T1–T9	≤30 d	1 y	61	16.4	4.9	9.8	1.7
	T10 and below			54	31.5	11.1	18.5	1.9
74Wilson et al. 2018b	T1–L1	≤7 d	6 m - 1 y	22	18.2	9.1	9.1	0
63Aimetti et al. 2019b,c,d	T2–T12	≤7 d	6 m – 1 y	170	21.1 (18.8b/23.4c/16.7d)	10.9b/8.5c/0d	7.8b/9.6c/16.7d	0b/5.3c/0d
	T2–T5			45	13.3	NR	NR	NR
	T6–T9			50	16.0	NR	NR	NR
	T10–T12			75	29.3	NR	NR	NR

Bolded lines represent all levels, with subdivisions from that study listed below.

NLI, neurological level of injury; AIS, American Spinal Injury Association Impairment Scale; NR, not reported.

^aSygen database.

^bEuropean Multicenter Study about Spinal Cord Injury database.

^cSpinal Cord Injury Model Systems database.

^dNorth American Clinical Trials Network registry.