Table 5 Chi-square test of association between clinical variables and PTSS
Variable | PTSS absent n (%) Baseline | PTSS present n (%) Baseline | Df = 1 Chi-square value (Sig) | PTSS absent n (%) 3 months | PTSS present n (%) 3 months | Df = 1 Chi-square value (Sig) | PTSS absent n (%) 6 months | PTSS present n (%) 6 months | Df = 1 Chi-square value (Sig) |
|---|---|---|---|---|---|---|---|---|---|
Pain | |||||||||
  ≤ 5 | 80(70) | 35(30) | 12 (< 0.001) | 65(69) | 29(31) | 8.2 (< 0.001) | 72(67) | 35(33) | 16.7 (< 0.001) |
  > 5 | 29(43) | 39(67) | 42(47) | 47(53) | 27(36) | 49(64) | |||
Treatment duration |  ≤ 1 month 49(52)  > 1 month 50(57) |  ≤ 1 month 46(48)  > 1month 38(43) | 0.33 (0.56) |  ≤ 4months 75(79)  > 4months 51(58) |  ≤ 4months 20(21)  > 4months 37(42) | 7.2 (0.01) |  ≤ 7months 78(82)  > 7months 65(74) |  ≤ 7months 17(18)  > 7months 23(26) | 3.3 0.04 |
Symptom duration |  ≤ 12months 59(57)  > 12months 40(63) |  ≤ 12months 44(43)  > 12months 40(37) | 0.69 (0.40) |  ≤ 15months 75(73)  > 15months 51(64) |  ≤ 15months 28(27)  > 15months 29(36) | 0.14 (0.71) |  ≤ 18months 100(97)  > 18months 43(54) |  ≤ 18months 3(3)a  > 18months 37(46) | 1.24 (0.34) |
Time since diagnosis |  ≤ 2months 64(68)  > 2months 35(39) |  ≤ 2months 30(32)  > 2months 54(61) | 4.4 (0.04) |  ≤ 5months 76(81)  > 5months 50(56) |  ≤ 5months 18(19)  > 5months 39(44) | 10 (< 0.001) |  ≤ 8 months 58(62)  > 8months 41(46) |  ≤ 8 months 36(38)  > 8months 48(54) | 4.5 (0.04) |
Cancer stage | |||||||||
 Stage 1 | 38(56) | 30(44) | 0.06 | 50(73) | 25(33) | 1.67 | 56(75) | 19(25) | 0.14 |
 Stage 2 | 61(53) | 54(47) | (0.81) | 76(70) | 32(30) | (0.20) | 87(81) | 21(19) | (0.07) |
Illness perception | |||||||||
 Poor | 14(32) | 30(68) | 11.4 | 24(63) | 14(37) | 0.60 | 30(75) | 10(25) | 12 |
 Not poor | 85(61) | 54(39) | (< 0.001) | 102(70) | 43(30) | (0.44) | 113(79) | 30(21) | (< 0.001) |
Treatment | |||||||||
 With chemo | 87(58) | 64(42) | 3.80 | 108(71) | 44(29) | 3.35 | 119(78) | 33(22) | 4.3 |
 Without chemo | 12(37) | 20(63) | (0.05) | 18(58) | 13(42) | (0.07) | 24(77) | 7(23) | (0.04) |