Metadata Anaylsis Tools

Grip Strength Test [DYNA]


Description of data
Number of studies32
Years of publication1974-2019
Number of data points178
Total number of participants24,022
nμσRange
Age24,02238.9422.423 - 99
Education5,8724.475.110 - 20
Trial(s):
Preferred
Non Preferred
Right
Left
(Orange) Quadratic Regression Line: y = ax2 + bx + c y = -0.017x2 + 1.526x + 9.721
(Green) Least Squares Regression Line: y = mx + b : y = 0.054x + 32.830
(Blue) Oxford Regression Line: [Male] y = 59.504 -0.240age
(Black) Oxford Regression Line: [Female] y = -0.002age2 + 0.088age + 32.093
Preferred
EnglishEnglish (inferred by country)Spanish (inferred by country)Portuguese (inferred by country)Malay (inferred by country)Italian (inferred by country)German (inferred by country)Belgian (inferred by country)Taiwanese inferred by countrySwiss (inferred by country)Not indicated by studyEnglish Australian
Plot only this language
Toggle Norm circles
Abnormal indications: None
Aggregate Age 68.64 61.2 53.8 46.4 39.0 31.6 24.2 16.8 9.4 2.0 5 10 15 21 26 31 36 42 47 52 57 63 68 73 78 84 89 94

*Removing a point means the plot is drawn with that point excluded. Curves and lines are recalculated.

Plotting Data

point IDAge
(aggregate)
Trial ValueLanguagexy
119034 ± 1.9English113.333367.564
219133.6 ± 1.4English113.333369.808
319245.7 ± 2.2English120.571358.029
419344.9 ± 1.8English120.571362.516
519457.4 ± 2.3English127.81348.494
619557 ± 2.2English127.81350.737
719669.9 ± 2.9English135.048334.471
819769 ± 3English135.048339.519
9198711.2 ± 3.4English142.286327.179
10199711.4 ± 3.8English142.286326.058
11201812.7 ± 3.4English149.524318.766
12200813.3 ± 3.7English149.524315.401
13202916.2 ± 4.2English156.762299.135
14203914.6 ± 3.3English156.762308.109
152041017.8 ± 4.3English164290.16
162051017.5 ± 4.4English164291.843
172061120.9 ± 4.8English171.238272.772
182071120.3 ± 4.7English171.238276.138
192081224.2 ± 6.5English178.476254.263
202091223.5 ± 4.7English178.476258.189
212111325 ± 5.3English185.714249.776
222101329.5 ± 7.8English185.714224.535
232121434.2 ± 7.9English192.952198.173
242131426.9 ± 6English192.952239.119
2571533.1 ± 7.8English200.19204.343
262141537.7 ± 8.9English200.19178.542
272151528.1 ± 5.3English200.19232.388
282171628.2 ± 5.4English207.429231.827
293401638 ± 8.4English207.429176.859
303451628.1 ± 5English207.429232.388
312161641 ± 10English207.429160.032
322181744.5 ± 10English214.667140.401
332191728.4 ± 5.8English214.667230.705
3438017.530.2 ± 5.56Not indicated by study218.286220.609
3537517.543.58 ± 10.25Not indicated by study218.286145.561
3614818.551.2 ± 6.6Swiss (inferred by country)225.524102.821
3716318.532 ± 4.8Swiss (inferred by country)225.524210.513
3834620.528.8 ± 7.8English240228.462
3934120.549.7 ± 9.7English240111.234
4010520.554 ± 7.4English (inferred by country)24087.115
411492253.9 ± 8.7Swiss (inferred by country)250.85787.676
421642233.4 ± 5.4Swiss (inferred by country)250.857202.66
431272244.77 ± 6.68Italian (inferred by country)250.857138.886
441262227.7 ± 4.35Italian (inferred by country)250.857234.631
453762351.49 ± 11.36Not indicated by study258.095101.194
463812329.79 ± 6.92Not indicated by study258.095222.909
473362458.1 ± 7.3English265.33364.119
481382427.28 ± 5.83English (inferred by country)265.333236.987
4936524.553.8 ± 7.8Not indicated by study268.95288.237
5037024.533.3 ± 4.7Not indicated by study268.952203.221
5127724.555.16 ± 8.48English268.95280.609
5233724.557.5 ± 6.3English268.95267.484
53124.556.84 ± 7.66English268.95271.186
546324.547 ± 9.5English (inferred by country)268.952126.378
556624.530 ± 7English (inferred by country)268.952221.731
561802659.4 ± 8.4German (inferred by country)279.8156.827
571792633.9 ± 4.3German (inferred by country)279.81199.856
5814526.542.4 ± 6.2English (inferred by country)283.429152.179
5914626.525.9 ± 4.2English (inferred by country)283.429244.728
6014726.533.6 ± 9.9English (inferred by country)283.429201.538
613392734 ± 5.96English287.048199.295
621502753 ± 7.5Swiss (inferred by country)287.04892.724
631652734.3 ± 5.7Swiss (inferred by country)287.048197.612
6438427.531.09 ± 7.33Not indicated by study290.667215.617
6537927.549.49 ± 10.53Not indicated by study290.667112.412
663422851.8 ± 8.1English294.28699.455
673472834.4 ± 9.2English294.286197.051
683382854.13 ± 9.95English294.28686.386
693822833.88 ± 7.65Not indicated by study294.286199.968
703772851.05 ± 8.55Not indicated by study294.286103.662
7135329.550.8 ± 11.5English305.143105.064
7235029.543.1 ± 12.1English305.143148.253
7335929.549.9 ± 8.4English305.143110.112
7435629.532.7 ± 8.7English305.143206.587
7536229.531 ± 5.4English305.143216.122
761663233.8 ± 5.9Swiss (inferred by country)323.238200.417
771513255 ± 7.1Swiss (inferred by country)323.23881.506
7837134.533.7 ± 6.2Not indicated by study341.333200.978
7936634.555.4 ± 7.1Not indicated by study341.33379.263
806834.531 ± 5.8English (inferred by country)341.333216.122
8118234.553.8 ± 8.9German (inferred by country)341.33388.237
8233534.542.41 ± 13.44English341.333152.123
836234.543.34 ± 13.33English341.333146.907
8417834.552.7 ± 7.9Belgian (inferred by country)341.33394.407
8518134.538.2 ± 3.1German (inferred by country)341.333175.737
866734.547 ± 9.7English (inferred by country)341.333126.378
871363544.7 ± 9Belgian (inferred by country)344.952139.279
881373550.1 ± 6.4Belgian (inferred by country)344.952108.99
8938335.532.98 ± 10.1Not indicated by study348.571205.016
9037835.552.28 ± 9.57Not indicated by study348.57196.763
9134336.552.9 ± 8.3English355.8193.285
9234836.527.7 ± 3.2English355.81234.631
931673735.8 ± 6.7Swiss (inferred by country)359.429189.199
941523755.9 ± 7.9Swiss (inferred by country)359.42976.458
9538840.527.1 ± 8.1English384.762237.997
9638940.526.37 ± 7.64English384.762242.091
9739040.543.92 ± 10.51English384.762143.654
9844148.1 ± 13.4English388.381120.208
9911741.517.6 ± 5.4Malay (inferred by country)392291.282
10011641.529.8 ± 8.2Malay (inferred by country)392222.853
1011534254.2 ± 8.1Swiss (inferred by country)395.61985.994
1021684234 ± 6Swiss (inferred by country)395.619199.295
10318444.548 ± 6.2German (inferred by country)413.714120.769
10437244.530.7 ± 5.5Not indicated by study413.714217.804
10536744.550.2 ± 5.3Not indicated by study413.714108.429
1067044.529 ± 9.8English (inferred by country)413.714227.34
10718344.536.3 ± 4.3German (inferred by country)413.714186.394
1083874545.4 ± 10.6English417.333135.353
10913545.535.4 ± 5.2German (inferred by country)420.952191.442
11013445.555 ± 10.2German (inferred by country)420.95281.506
11113345.543.7 ± 12.4German (inferred by country)420.952144.888
1121544751.8 ± 8.3Swiss (inferred by country)431.8199.455
1131694734.1 ± 5.3Swiss (inferred by country)431.81198.734
11436049.548.2 ± 7.3English449.905119.647
11535149.534 ± 9.7English449.905199.295
11636349.529.8 ± 5.8English449.905222.853
11735449.539.8 ± 6English449.905166.763
11835749.527.7 ± 5.9English449.905234.631
1191555250.8 ± 9.1Swiss (inferred by country)468105.064
1201705233.7 ± 4.5Swiss (inferred by country)468200.978
12134452.544.5 ± 10.9English471.619140.401
12234952.528 ± 6.2English471.619232.949
12337354.528.8 ± 3.6Not indicated by study486.095228.462
12436854.544.3 ± 5.4Not indicated by study486.095141.522
12510254.537.59 ± 8.6English (inferred by country)486.095179.159
1267154.545 ± 8.4English (inferred by country)486.095137.596
12710154.540.83 ± 12.99English (inferred by country)486.095160.986
12818554.534.5 ± 7.6German (inferred by country)486.095196.49
12918654.562.4 ± 13.4German (inferred by country)486.09540
1307254.528 ± 6.4English (inferred by country)486.095232.949
1311715731.9 ± 4.9Swiss (inferred by country)504.19211.074
1321565753.6 ± 8.6Swiss (inferred by country)504.1989.359
13386045.1 ± 11.4English525.905137.035
1341726228.7 ± 5.5Swiss (inferred by country)540.381229.022
1351576247.9 ± 6.4Swiss (inferred by country)540.381121.33
1361886445 ± 4.4German (inferred by country)554.857137.596
1371876425.5 ± 4.9German (inferred by country)554.857246.971
13836464.525 ± 4.9English558.476249.776
1397364.540 ± 8.3English (inferred by country)558.476165.641
1407464.524 ± 6.8English (inferred by country)558.476255.385
14135264.532 ± 10English558.476210.513
14214064.521.1 ± 4.4Taiwanese inferred by country558.476271.651
14313964.535 ± 7.6Taiwanese inferred by country558.476193.686
14435564.538.7 ± 5.9English558.476172.933
14535864.525.6 ± 5.3English558.476246.41
14636164.544.5 ± 5.6English558.476140.401
1471096731.8 ± 10.3Portuguese (inferred by country)576.571211.635
1481736729.5 ± 3.6Swiss (inferred by country)576.571224.535
1491586743 ± 6.8Swiss (inferred by country)576.571148.814
15036968.545.5 ± 5.4Not indicated by study587.429134.792
15137468.528.3 ± 6.3Not indicated by study587.429231.266
1523867026.9 ± 4English Australian598.286239.119
1533857041.7 ± 6.2English Australian598.286156.106
1541747226.4 ± 6.8Swiss (inferred by country)612.762241.923
1551597241.7 ± 8.9Swiss (inferred by country)612.762156.106
15614274.520.5 ± 5.6Taiwanese inferred by country630.857275.016
15711074.528.3 ± 8.3Portuguese (inferred by country)630.857231.266
15814174.532.5 ± 5.8Taiwanese inferred by country630.857207.708
1591607736.8 ± 8.9Swiss (inferred by country)648.952183.59
1601757725 ± 4.5Swiss (inferred by country)648.952249.776
1611898021.6 ± 8.3Spanish (inferred by country)670.667268.846
1621008017.2 ± 5Spanish (inferred by country)670.667293.526
163998029.3 ± 7.4Spanish (inferred by country)670.667225.657
1641768219.2 ± 5.2Swiss (inferred by country)685.143282.308
1651618230.7 ± 9.1Swiss (inferred by country)685.143217.804
16614484.517.8 ± 5.2Taiwanese inferred by country703.238290.16
16714384.526.5 ± 5.5Taiwanese inferred by country703.238241.362
16811186.523.8 ± 7.5Portuguese (inferred by country)717.714256.506
16917790.516.9 ± 4.8Swiss (inferred by country)746.667295.208
17016290.522.4 ± 6.2Swiss (inferred by country)746.667264.359

Quadratic Regression Line Details

y = ax2 + bx + c
a = ((Σx2y · Σxx) - (Σxx · Σxx2))
((Σxx · Σx2x2) - (Σ(xx2)2))
b = ((xy · Σx2x2) - (Σx2y · Σxx2))
((Σxx · Σx2x2) - (Σxx2 · Σxx2))
c = ((Σy/n) - (b · Σx/n)) - (a · (Σx2/n))
    Parameter equations:
  1. aΣx4 + bΣx3 + c Σx2 = Σx2y
    1373918169.25a + 20705754.75b + 342568c = 11625614.925
  2. aΣx3 + bΣx2 + c Σx = Σxy
    20705754.75a + 342568b + 6618c = 235918.07
  3. aΣx2 + bΣx + nc = Σy
    342568a + 6618b + 170c = 5941.37
Σx = 6618
Σy = 5941.37
Σx2 = 342568
Σx3 = 20705754.75
Σx4 = 1373918169.25
Σxy = 235918.07
Σx2y = 11625614.925
Σxx: 84933.152941176 = 342568 - ( (6618 * 6618) / 170);
Σxy: 4624.0308235294 = 235918.07 - ( (6618 * 5941.37) / 170);
Σxx2 : 7369784.0205882= 20705754.75 - ( (342568*6618) / 170);
Σx2y: -346874.71123529= 11625614.925- ( (342568*5941.37) / 170);
Σx2x2: 683607377.34412= 1373918169.25 - ( (342568*342568)/170);
a = ((Σx2y · Σxx) - (Σxx · Σxx2))
((Σxx · Σx2x2) - (Σ(xx2)2))
a = ((-346874.71123529 · 84933.152941176) - (84933.152941176 · 7369784.0205882))
((84933.152941176 · 683607377.34412) - (7369784.0205882)2)
a = -0.016956405794512
b = ((xy · Σx2x2) - (Σx2y · Σxx2))
((Σxx · Σx2x2) - (Σxx2 · Σxx2))
b = ((4624.0308235294 · 683607377.34412) - (-346874.71123529 · 7369784.0205882))
((84933.152941176 · 683607377.34412) - (7369784.0205882 · 7369784.0205882))
b = 1.525777329664
c = ((Σy/n) - (b · Σx/n)) - (a · (Σx2/n))
c = (5941.37/170) - (1.525777329664 * (6618/170)) - (-0.016956405794512 * (342568/170));
c = 9.7205744264582
y = ax2 + bx + c
y = -0.016956405794512x2 + 1.525777329664x + 9.7205744264582















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