Level of evidence of clinical neurosurgery research in Saudi Arabia

Bakur A. Jamjoom; Aimun A. Jamjoom; Abdulhakim B. Jamjoom

Article Figures & Data

Tables

View popup

Table 1

Level of evidence of clinical neurosurgery research in the Kingdom of Saudi Arabia.

Feature	Articles numbers	Level of evidence (LOE), n (%)				LOE mean	Mean difference (95% confidence interval)	P-value (significance)
Feature	Articles numbers	I	II	III	IV	LOE mean	Mean difference (95% confidence interval)	P-value (significance)
*Year*
1990-2000	204	0	0	12 (5.9)	192 (94.1)	3.94	0.0900 (0.0208 – 0.1592)	0.0110 (Sig)
2001-2013	173	1 (0.6)	2 (1.2)	19 (11.0)	151 (78.3)	3.85	0.0900 (0.0208 – 0.1592)
*International Collaboration*
Yes	41	0	2 (4.9)	5 (12.2)	34 (82.9)	3.78	-0.1300 (-0.2402 – -0.0198)	0.0209 (Sig)
No	336	1 (0.3)	0	26 (7.7)	309 (92.0)	3.91	-0.1300 (-0.2402 – -0.0198)
*Journal*
Neuroscience^*	247	1 (0.4)	2 (0.8)	16 (6.5)	228 (92.3)	3.91	0.0300 (-0.0424 – 0.1024)	0.4160 (NS)
Other medical	130	0	0	15 (11.5)	115 (88.5)	3.88	0.0300 (-0.0424 – 0.1024)
*Journal’s IF*
IF ≥1	243	1 (0.4)	1 (0.4)	20 (8.2)	221 (90.9)	3.90	0.000 (-0.0719 – 0.0719)	1.000 (NS)
IF <1	134	0	1 (0.7)	11 (8.2)	122 (91.0)	3.90	0.000 (-0.0719 – 0.0719)
*Research topic*
Neurosurgery	316	1 (0.3)	2 (0.6)	19 (6.0)	294 (93.0)	3.92	0.1200 (0.0259 – 0.2141)	0.0126 (Sig)
Other neuroscience^†	61	0	0	12 (19.7)	49 (80.0)	3.80	0.1200 (0.0259 – 0.2141)
*Article citation numbers*
Citations ≥10	140	0	2 (1.4)	15 (10.7%)	123 (87.9)	3.86	-0.0600 (-0.1320 – 0.0120)	0.1021 (NS)
Citations <10	237	1 (0.4)	0	16 (6.8%)	220 (92.8)	3.92	-0.0600 (-0.1320 – 0.0120)
*Comparison with literature*
Current Study	377	1 (0.3)	2 (0.5)	31 (8.2)	343 (91.0)	3.90
Makhdom et al1 2013 (Ortho-KSA)	159	4 (2.5)	9 (5.7)	8 (5.0)	138 (86.8)	3.76	0.1400 (0.0540 – 0.2260)	0.0015 (Sig)
Samargandi et al2 2013 (Plastic-KSA)	246	0	6 (2.4)	14 (5.7)	226 (91.9)	3.89	0.0100 (-0.0474 – 0.0674)	0.7322 (NS)
Amiri et al3 2013 (Spine-USA/Europe)	703	33 (4.7)	163 (23.2)	88 (12.5)	419 (59.6)	3.27	0.6300 (0.5286 – 0.7314)	0.0001 (Sig)
Rothoerl et al4 2003 (Neuro-USA/Europe)	441	28 (6.3)	138 (31.3)	39 (8.8)	236 (53.5)	3.10	0.8000 (0.6891 – 0.9109)	0.0001 (Sig)
Alimi et al5 2013 (Neuro-Iran)	1178^{^‡}	74 (6.3)	71 (6.0)	57 (4.8)	279 (23.7)	3.12	0.7800 (0.6597 – 0.9003)	0.0001(Sig)