. 2020 Jul 12;12(7):1536. doi: 10.3390/polym12071536

Table 5.

Summary findings and forest plot of tear strength (N/mm) outcomes in case-control studies incorporating filler particles with MFPSE.

Study or Subgroup	With Filler Particle			Without Filler Particle			Weight	Std. Mean Difference
Study or Subgroup	Mean	SD	Total	Mean	SD	Total	Weight	IV, Random, 95% CI
Alsamaraay (2017) 1%Nylon	20.12	1.89	10	20.99	1.21	10	6.2%	−0.53 [−1.42, 0.37]
Haider (2019) 5%PP	20	0.74	10	20.77	2.4	10	6.2%	−0.42 [−1.30, 0.47]
Jebur (2018) 0.5%PF	25.34	1.45	10	25.97	2.49	10	6.2%	−0.30 [−1.18, 0.59]
Jebur (2018) 0.25%PF	26.81	2.34	10	25.97	2.49	10	6.2%	0.33 [−0.55, 1.22]
Kareem (2018) 1%ZrS	21.66	2.99	10	20.75	0.98	10	6.2%	0.39 [−0.50, 1.28]
Haider (2019) 3%PP	21.95	2.98	10	20.77	2.4	10	6.2%	0.42 [−0.47, 1.31]
Alsmael (2018) 1% TiS	26.48	3.46	10	23.39	2.29	10	6.1%	1.01 [0.07, 1.95]
Kareem (2018) 0.5%ZrS	21.65	0.47	10	20.75	0.98	10	6.1%	1.12 [0.16, 2.08]
Haider (2019) 1%PP	23.48	0.76	10	20.77	2.4	10	6.1%	1.46 [0.45, 2.47]
Alsmael (2018) 0.5% TiS	27.92	2.95	10	23.39	2.29	10	6.1%	1.64 [0.60, 2.69]
Mohammad (2019) 1% Y₂O₂	26.89	1.15	10	23.93	1.08	10	5.9%	2.54 [1.30, 3.78]
Kareem (2018) 1.5%ZrS	23.4	0.66	10	20.75	0.98	10	5.8%	3.04 [1.67, 4.41]
Mohammad (2019) 1.5% Y₂O₂	27.98	0.67	10	23.93	1.08	10	5.4%	4.32 [2.59, 6.05]
Azeez (2018) 1.5% Ag Zn	19.18	1.09	10	14.81	0.67	10	5.3%	4.63 [2.80, 6.45]
Azeez (2018) 0.5% Ag Zn	19.03	0.85	10	14.81	0.67	10	5.1%	5.28 [3.26, 7.31]
Shakir (2018) 0.25%–2%TiO₂	27.67	0.47	10	23.61	0.34	10	3.7%	9.48 [6.09, 12.87]
Azeez (2018) 1% Ag Zn	22.57	0.81	10	14.81	0.67	10	3.5%	10.00 [6.43, 13.57]
Zayed (2014) 3% SiO₂	45.9	1.94	21	19.32	1.9	21	3.9%	13.58 [10.47, 16.69]
Subtotal (95% CI)			191			191	100.0%	2.62 [1.64, 3.59]
Heterogeneity: Tau² = 3.84; Chi² = 208.67, df = 17 (P < 0.00001); I² = 92%
Test for overall effect: Z = 5.23 (P < 0.00001)