Appendix A.
Studies included in the present meta-analysis.
| Author | Country | N | Length of study interval (years) | Cancer sites | Design | Target variables |
|---|---|---|---|---|---|---|
| Akechi et al. [49] | Japan | 122 | 2 | Lung | uc | n |
| Allison et al. [50] | Canada | 96 | 1 | Head/neck | uc, c | n |
| Ben-Schlomo et al. [51] | U.K. | 18,403 | 18 | Mixed | uc | m |
| Broers et al. [52] | Netherlands | 123 | 7.2 | Mixed | uc | m |
| Burns et al. [53] | Australia | 163 | 3 | Mixed | c | m, n |
| Butow et al. [54] | Australia | 125 | 2 | Melanoma | uc | m, s |
| Butow et al. [55] | Australia | 99 | 5.5 | Breast | c | s |
| Cassileth et al. [32] | U.S. | 204 | 8 | Mixed | uc, c | m, n |
| Chang and Barker [56] | U.S. | 10,987 | n.r. | Glioblastoma | c | m |
| Chung et al. [57] | Taiwan | 57 | 2 | Mixed | uc | m, s |
| Colón et al. [58] | U.S. | 100 | 2 | Leukemia | uc | s |
| Cousson-Gélie et al. [59] | France | 75 | 10 | Breast | uc, c | m, s |
| Cronin-Fenton et al. [17] | Ireland | 1,257 | n.r. | Non-Hodgkin’s lymphoma | c | m |
| DeGraef et al. [46] | Netherlands | 208 | 3.75 | Head, neck | uc | m |
| Ehlers [60] | U.S. | 130 | 2.67 | Head, neck | uc | m |
| Ell et al. [33] | U.S. | 410 | 6.9 | Breast, colorectal, lung | uc, c | m, s |
| Forsén [61] | Finland | 87 | 8 | Breast | c | m |
| Foster et al. [62] | U.S. | 131 | n.r. | Leukemia | uc | m, s |
| Frick et al. [63] | Germany | 99 | 2.4 | Myelom, lymphoma | uc, c | m, s |
| Funch and Marshall [37] | U.S. | 208 | 20 | Breast | c | n |
| Gajalakshmi et al. [64] | India | 1,325 | n.r. | Breast | uc | m |
| Ganz et al. [65] | U.S. | 40 | 1.5 | Lung | uc | m |
| Ghori et al. [66] | U.S. | 292 | 10 | Thyroid | uc | m |
| Gilliland et al. [67] | U.S. | 15,698 | 10 | Thyroid | uc | m |
| Giraldi et al. [68] | Italy | 96 | 6 | Breast | uc | s |
| Goodwin et al. [69] | U.S. | 646 | 10 | Mixed | c | s |
| Goodwin et al. [30] | U.S. | 24,696 | n.r. | Breast | c | m |
| Gore et al. [70] | U.S. | 5,854 | 3.3 | Bladder | uc, c | m |
| Grulke et al. [71] | Germany | 72 | 9 | Leukemia | uc | s |
| Hall et al. [72] | Australia | 14,587 | 5 | Colorectal | c | m |
| Harvei and Kravdahl [73] | Norway | 30,000 | 5 | Prostate | c | m |
| Herndon et al. [74] | U.S. | 206 | 4.2 | Lung | uc | s |
| Hill et al. [31] | U.S. | 445,423 | n.r. | Breast | uc | m |
| Iwasaki et al. [75] | Japan | 11,560 | n.r. | Mixed | c | m, n, s |
| Jaffe et al. [76] | Israel | 12,498 | 10 | Mixed | uc | m |
| Jatoi et al. [77] | U.S. | 5,898 | 6.9 | Lung | c | m |
| Johansen et al. [78] | Denmark | 3,896 3,406 |
24 24 |
Colon Rectum |
uc, c | m |
| Karvonen-Gutierrez et al. [79] | U.S. | 405 | n.r. | Head, neck | uc, c | m |
| Kato et al. [80] | Japan | 2,581 4,422 |
5 5 |
Colorectal Gastric |
uc | m |
| Konski et al. [81] | U.S. | 1,438 | 2.3 | Head, neck | c | m |
| Kravdal [82] | Norway | >100,000 | n.r. | Mixed | uc, c | m |
| Kravdal [83] | Norway | 45,270 | 10 | Mixed | c | m, n |
| Kroenke et al. [14] | U.S. | 2,835 | n.r. | Breast | c | m, n |
| Krongard et al. [84] | U.S. | 146,979 | 12 | Prostate | c | m |
| Krongard et al. [85] | U.S. | 1,070 12,636 |
n.r. n.r. |
Bladder Prostate |
uc | m |
| Lai et al. [40] | U.S. | 261,070 | n.r. | Mixed | c | m |
| Lehto et al. [86] | Finland | 102 | n.r. | Breast | c | s |
| LeMarchand et al. [87] | U.S. | 2,956 | 5 | Breast | uc | m |
| Maunsell et al. [88] | Canada | 224 | 7 | Breast | uc, c | s |
| Murphy et al. [89] | U.K. | 1,607 | 5 | Cervix | uc | m |
| Nakaya et al. [90] | Japan | 189 | 28.5 | Mixed | uc | m |
| Naughton et al. [91] | U.S. | 67 | 1 | Lung | c | s |
| Neale [92] | U.S. | 1,261 | 10 | Breast | uc | m |
| Neale et al. [22] | U.S. | 10,778 | 10 | Breast | uc, c | m |
| Osborne et al. [93] | Australia | 61 | 7 | Breast | c | s |
| Osborne et al. [10] | U.S. | 32,268 | 3 | Breast | uc, c | m |
| Ou et al. [94] | U.S. | 4,702 | n.r. | Lung | c | m |
| Phillips et al. [95] | Australia | 708 | 8.2 | Breast | uc, c | s |
| Pinquart et al. [34] | Germany | 50 | 2 | Leukemia | uc, c | s |
| Prieto et al. [96] | Spain | 1,999 | 5 | Leukemia | uc | m |
| Reid et al. [97] | U.S. | 9,386 | n.r. | Neck | uc, c | m |
| Reyes Ortiz et al. [11] | U.S. | 14,180 | n.r. | Melanoma | uc | m |
| Reynolds and Kaplan [98] | U.S. | 476 | 17 | Mixed | uc, c | m, n |
| Reynolds et al. [43] | U.S. | 1,011 | 5 | Breast | c | m, s |
| Reynolds et al. [99] | U.S. | 747 | 8.5 | Breast | c | s |
| Richardson et al. [100] | U.S. | 94 | 5 | Hematologic malignancies | uc | m |
| Ringdal et al. [101] | Norway | 231 | 2 | Mixed | uc | m |
| Ross et al. [102] | Denmark | 249 | 2 | Colorectal | c | m |
| Saito-Nakaya et al. [103] | Japan | 238 | 6.5 | Lung | uc, c | s |
| Saito-Nakaya et al. [104] | Japan | 865 | 2 | Lung | uc, c | m |
| Sakauchi [105] | Japan | 6,219 | n.r. | Mixed | c | m |
| Sehlen et al. [106] | Germany | 57 | 7 | Brain | uc | m |
| Soler-Vila et al. [107] | U.S. | 322 | 10 | Breast | c | s |
| Stavratsky et al. [108] | Canada | 224 | 1 | Lung | uc | m |
| Strand et al. [109] | Diverse | 10789,239 | n.r. | Breast | uc | m |
| Studzinski and Zajewski [110] | Poland | 121 | 5 | Endometrium | uc | m |
| Tominaga et al. [111] | Japan | 398 | n.r. | Breast | c | m, n |
| Tschuschke et al. [112] | Germany | 52 | 5 | Leukemia | uc | m |
| Villingshøj et al. [45] | Denmark | 770 | 4.5 | Colorectal | c | m, n |
| Vogt et al. [38] | U.S. | 2,324 | 15 | Mixed | uc | n |
| Waxler-Morrison et al. [15] | Canada | 133 | 4 | Breast | c | m, n, s |
| Weihs et al. [113] | U.S. | 90 | 8.5 | Breast | c | s |
| Welin et al. [114] | Sweden | 989 | 12 | Mixed | uc, c | n |
| Wojicik et al. [115] | U.S. | 6,577 | 13.33 | Breast | uc | m |
| Wong et al. [116] | Taiwan | 1,010 | 5 | Oral | uc, c | m |
| Wrensch et al. [117] | U.S. | 728 | n.r. | Brain | uc, c | m |
| Yeole et al. [118] | India | 5,345 | 5 | Head, neck | uc, c | m |
n.r.: not reported. c: controlled effect sizes were included in the meta-analysis, uc: uncontrolled effect sizes were included; target variables: m – marital status, n – network size, s – social support.