Comparison 2. Internal fixation versus hemiarthroplasty.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Length of surgery (in minutes)	6		Mean Difference (IV, Random, 95% CI)	Totals not selected
1.1 Screws versus Thompson	2		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
1.2 Screws versus Moore	2		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
1.3 Screws or SHS versus bipolar hemiarthroplasty	2		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
2 Operative blood loss (in millilitres)	5		Mean Difference (IV, Random, 95% CI)	Totals not selected
2.1 Screws versus Thompson	2		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
2.2 Screws versus Moore	2		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
2.3 Screws or SHS versus bipolar hemiarthroplasty	1		Mean Difference (IV, Random, 95% CI)	0.0 [0.0, 0.0]
3 Number of patients transfused	5	1060	Risk Ratio (M‐H, Fixed, 95% CI)	0.39 [0.29, 0.53]
3.1 Screws versus Moore	2	507	Risk Ratio (M‐H, Fixed, 95% CI)	0.12 [0.06, 0.26]
3.2 Screws v Christiansen bipolar	1	104	Risk Ratio (M‐H, Fixed, 95% CI)	0.03 [0.00, 0.45]
3.3 Screws or SHS versus bipolar hemiarthroplasty	2	449	Risk Ratio (M‐H, Fixed, 95% CI)	0.80 [0.56, 1.14]
4 Re‐operations minor ( eg fixation‐ removal of metalwork, dislocation of hemiarthroplasty)	12		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
4.1 Screws versus Thompson	2	91	Risk Ratio (M‐H, Random, 95% CI)	0.31 [0.01, 7.15]
4.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Random, 95% CI)	5.39 [0.23, 126.75]
4.3 SHS versus Moore	1	182	Risk Ratio (M‐H, Random, 95% CI)	0.04 [0.00, 0.67]
4.4 SHS versus Stanmore bipolar	1	43	Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]
4.5 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Random, 95% CI)	1.15 [0.04, 31.12]
4.6 SHS versus Thompson or Monk bipolar	1	280	Risk Ratio (M‐H, Random, 95% CI)	4.02 [0.75, 21.56]
4.7 2 von Bahr screws versus Variokopf bipolar hemiarthroplasty	1	100	Risk Ratio (M‐H, Random, 95% CI)	1.06 [0.35, 3.26]
4.8 2 Olmed screws versus bipolar hemiarthroplasty	1	219	Risk Ratio (M‐H, Random, 95% CI)	2.80 [1.31, 5.98]
5 Re‐operations moderate (eg fixation to hemiarthroplasty or total hip replacement, drainage, girdlestone)	12		Risk Ratio (M‐H, Random, 95% CI)	Subtotals only
5.1 Screws versus Thompson	2	91	Risk Ratio (M‐H, Random, 95% CI)	6.12 [1.13, 33.22]
5.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Random, 95% CI)	8.15 [2.46, 26.98]
5.3 SHS versus Moore	1	182	Risk Ratio (M‐H, Random, 95% CI)	10.00 [3.16, 31.60]
5.4 SHS versus Stanmore bipolar	1	43	Risk Ratio (M‐H, Random, 95% CI)	3.14 [0.71, 13.87]
5.5 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Random, 95% CI)	3.72 [1.28, 10.76]
5.6 SHS versus Thompson or Monk bipolar	1	280	Risk Ratio (M‐H, Random, 95% CI)	17.43 [5.41, 56.09]
5.7 2 von Bahr screws versus Variokopf bipolar hemiarthroplasty	1	100	Risk Ratio (M‐H, Random, 95% CI)	7.39 [2.38, 22.91]
5.8 2 Olmed screws versus bipolar hemiarthroplasty	1	219	Risk Ratio (M‐H, Random, 95% CI)	8.37 [3.45, 20.32]
6 Re‐operations major (eg revision hemiarthroplasty or conversion to total hip replacement)	12		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
6.1 Screws versus Thompson	2	91	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
6.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Fixed, 95% CI)	0.71 [0.32, 1.60]
6.3 SHS versus Moore	1	182	Risk Ratio (M‐H, Fixed, 95% CI)	0.03 [0.00, 0.42]
6.4 SHS versus Stanmore bipolar	1	43	Risk Ratio (M‐H, Fixed, 95% CI)	0.10 [0.01, 1.62]
6.5 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Fixed, 95% CI)	0.08 [0.01, 0.52]
6.6 SHS versus Thompson or Monk bipolar	1	280	Risk Ratio (M‐H, Fixed, 95% CI)	0.67 [0.07, 6.36]
6.7 2 von Bahr screws versus Variokopf bipolar hemiarthroplasty	1	100	Risk Ratio (M‐H, Fixed, 95% CI)	0.30 [0.01, 7.10]
6.8 2 Olmed screws versus bipolar hemiarthroplasty	1	219	Risk Ratio (M‐H, Fixed, 95% CI)	8.76 [0.48, 160.76]
7 Total re‐operation rate (within follow‐up period of study)	14		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
7.1 Screws versus Thompson	2	91	Risk Ratio (M‐H, Fixed, 95% CI)	5.15 [1.22, 21.68]
7.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Fixed, 95% CI)	5.82 [3.85, 8.79]
7.3 SHS versus Moore	1	182	Risk Ratio (M‐H, Fixed, 95% CI)	1.36 [0.85, 2.18]
7.4 SHS versus Stanmore bipolar	1	43	Risk Ratio (M‐H, Fixed, 95% CI)	0.90 [0.36, 2.23]
7.5 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Fixed, 95% CI)	1.33 [0.72, 2.47]
7.6 SHS versus Thompson or Monk bipolar	1	280	Risk Ratio (M‐H, Fixed, 95% CI)	7.04 [3.34, 14.83]
7.7 SHS versus hemiarthroplasty (unknown type)	1	86	Risk Ratio (M‐H, Fixed, 95% CI)	2.4 [0.92, 6.23]
7.8 Screws or SHS versus bipolar hemiarthroplasty	1	229	Risk Ratio (M‐H, Fixed, 95% CI)	7.21 [3.21, 16.22]
7.9 2 von Bahr screws versus Variokopf bipolar hemiarthroplasty	1	100	Risk Ratio (M‐H, Fixed, 95% CI)	3.93 [1.91, 8.07]
7.10 2 Olmed screws versus bipolar hemiarthroplasty	1	219	Risk Ratio (M‐H, Fixed, 95% CI)	4.16 [2.28, 7.58]
8 Superficial wound infection	9	1502	Risk Ratio (M‐H, Fixed, 95% CI)	0.87 [0.50, 1.53]
8.1 Screws versus Thompson	1	60	Risk Ratio (M‐H, Fixed, 95% CI)	0.09 [0.00, 1.48]
8.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Fixed, 95% CI)	1.45 [0.56, 3.77]
8.3 SHS versus Stanmore bipolar	1	43	Risk Ratio (M‐H, Fixed, 95% CI)	0.21 [0.01, 4.11]
8.4 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Fixed, 95% CI)	0.49 [0.11, 2.13]
8.5 SHS versus Thompson or Monk bipolar	1	280	Risk Ratio (M‐H, Fixed, 95% CI)	6.0 [0.25, 145.88]
8.6 Screws or SHS versus bipolar hemiarthroplasty	1	229	Risk Ratio (M‐H, Fixed, 95% CI)	1.41 [0.41, 4.87]
9 Deep wound infection	11		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
9.1 Screws versus Thompson	1	60	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
9.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Fixed, 95% CI)	0.17 [0.04, 0.75]
9.3 SHS versus Moore	1	198	Risk Ratio (M‐H, Fixed, 95% CI)	0.15 [0.01, 2.79]
9.4 SHS versus Stanmore bipolar	1	43	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
9.5 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Fixed, 95% CI)	0.35 [0.08, 1.66]
9.6 SHS versus Thompson or Monk bipolar	1	280	Risk Ratio (M‐H, Fixed, 95% CI)	0.67 [0.03, 16.21]
9.7 Screws or SHS versus bipolar hemiarthroplasty	2	448	Risk Ratio (M‐H, Fixed, 95% CI)	1.23 [0.48, 3.11]
10 Length of hospital stay (in days)	5	1036	Mean Difference (IV, Random, 95% CI)	0.79 [‐2.13, 3.72]
10.1 Screws versus Thompson	1	60	Mean Difference (IV, Random, 95% CI)	4.5 [‐11.20, 20.20]
10.2 Screws versus Moore	1	455	Mean Difference (IV, Random, 95% CI)	0.30 [‐5.20, 5.80]
10.3 Screws or SHS versus bipolar hemiarthroplasty	2	449	Mean Difference (IV, Random, 95% CI)	‐0.80 [‐2.60, 1.00]
10.4 SHS versus hemiarthroplasty (unknown type)	1	72	Mean Difference (IV, Random, 95% CI)	3.90 [2.45, 5.35]
11 Mortality at 30 days	4	780	Risk Ratio (M‐H, Fixed, 95% CI)	0.76 [0.46, 1.24]
11.1 SHS or screws versus bipolar hemiarthroplasty	4	780	Risk Ratio (M‐H, Fixed, 95% CI)	0.76 [0.46, 1.24]
12 Mortality up to 3 to 6 months	10	1474	Risk Ratio (M‐H, Fixed, 95% CI)	0.81 [0.64, 1.03]
12.1 Screws versus Thompson	2	91	Risk Ratio (M‐H, Fixed, 95% CI)	1.02 [0.52, 2.00]
12.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Fixed, 95% CI)	0.77 [0.56, 1.08]
12.3 SHS versus Stanmore bipolar	1	42	Risk Ratio (M‐H, Fixed, 95% CI)	0.25 [0.03, 2.05]
12.4 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Fixed, 95% CI)	1.12 [0.61, 2.08]
12.5 Screws or SHS versus bipolar hemiarthroplasty	2	451	Risk Ratio (M‐H, Fixed, 95% CI)	0.71 [0.41, 1.23]
13 Mortality up to 12 months	10	1528	Risk Ratio (M‐H, Fixed, 95% CI)	0.93 [0.78, 1.11]
13.1 Screws versus Thompson	1	60	Risk Ratio (M‐H, Fixed, 95% CI)	1.34 [0.85, 2.11]
13.2 Screws versus Moore	3	617	Risk Ratio (M‐H, Fixed, 95% CI)	0.94 [0.73, 1.21]
13.3 SHS versus Stanmore bipolar	1	41	Risk Ratio (M‐H, Fixed, 95% CI)	0.42 [0.09, 1.92]
13.4 Screws, SHS or nail & plate versus Christiansen bipolar	2	273	Risk Ratio (M‐H, Fixed, 95% CI)	0.96 [0.60, 1.54]
13.5 Screws or SHS versus bipolar hemiarthroplasty	2	451	Risk Ratio (M‐H, Fixed, 95% CI)	0.82 [0.55, 1.24]
13.6 SHS versus hemiarthroplasty (unknown type)	1	86	Risk Ratio (M‐H, Fixed, 95% CI)	0.83 [0.27, 2.53]
14 Mortality 24 to 48 months	11	1519	Risk Ratio (M‐H, Fixed, 95% CI)	0.95 [0.84, 1.08]
14.1 Screws versus Thompson	2	91	Risk Ratio (M‐H, Fixed, 95% CI)	1.16 [0.91, 1.49]
14.2 Screws versus Moore	3	580	Risk Ratio (M‐H, Fixed, 95% CI)	0.88 [0.73, 1.06]
14.3 2 von Bahr screws versus Variokopf bipolar hemiarthroplasty	1	100	Risk Ratio (M‐H, Fixed, 95% CI)	1.55 [0.48, 4.97]
14.4 SHS versus Stanmore bipolar	1	42	Risk Ratio (M‐H, Fixed, 95% CI)	0.83 [0.30, 2.31]
14.5 SHS or nail & plate versus Christiansen bipolar	1	169	Risk Ratio (M‐H, Fixed, 95% CI)	1.02 [0.67, 1.56]
14.6 Screws or SHS versus bipolar hemiarthroplasty	2	451	Risk Ratio (M‐H, Fixed, 95% CI)	0.97 [0.71, 1.32]
14.7 SHS versus hemiarthroplasty (unknown type)	1	86	Risk Ratio (M‐H, Fixed, 95% CI)	0.85 [0.43, 1.67]
15 Mortality 10 years	1	455	Risk Ratio (M‐H, Fixed, 95% CI)	0.96 [0.90, 1.03]
15.1 Screws versus Moore	1	455	Risk Ratio (M‐H, Fixed, 95% CI)	0.96 [0.90, 1.03]
16 Pain at one year	3	561	Risk Ratio (M‐H, Fixed, 95% CI)	0.98 [0.82, 1.18]
16.1 Screws versus Thompson	0	0	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
16.2 Screws versus Moore	2	366	Risk Ratio (M‐H, Fixed, 95% CI)	0.80 [0.62, 1.04]
16.3 Screws or SHS versus bipolar hemiarthroplasty	1	195	Risk Ratio (M‐H, Fixed, 95% CI)	1.26 [0.99, 1.61]
17 Failure to return to same residence at final follow‐up	2	372	Risk Ratio (M‐H, Fixed, 95% CI)	0.84 [0.54, 1.33]
17.1 Screws versus Moore	2	372	Risk Ratio (M‐H, Fixed, 95% CI)	0.84 [0.54, 1.33]
18 Failure to regain mobility	6	593	Risk Ratio (M‐H, Fixed, 95% CI)	0.99 [0.86, 1.15]
18.1 Screws versus Thompson	1	24	Risk Ratio (M‐H, Fixed, 95% CI)	1.87 [0.53, 6.57]
18.2 Screws versus Moore	3	419	Risk Ratio (M‐H, Fixed, 95% CI)	0.88 [0.75, 1.04]
18.3 2 von Bahr screws versus Variokopf bipolar hemiarthroplasty	1	84	Risk Ratio (M‐H, Fixed, 95% CI)	1.95 [1.15, 3.30]
18.4 Screws v Christiansen bipolar	1	66	Risk Ratio (M‐H, Fixed, 95% CI)	0.99 [0.69, 1.43]