Skip to main content

Advertisement

Table 2 Quality checklist

From: The natural course of low back pain: a systematic critical literature review

Ref N° Representativeness Quality of data Definition of LBP
  Response rates in relation to invited study sample at baseline. Sample sizes N/% response at all surveys based on number of participants at first survey At least one of the following: Whole target population; Randomly selected sample; or Sample stated to represent general population At least one of the following: Reasons for non response described; Non-responders described; Comparison responders-non-responders; or Comparison of sample and target population Same mode of data collection for all subjects, and all surveys Same definition(s) of LBP outcome variable used for all subjects at all survey At least one of the following: Questionnaires, diaries, or interviews validated; Tested for reproductibility or Tested in pilot study Precise anatomical delineation of lumbar area; or Reference to easily obtainable article that contains such specification Further specification of definition of LBP; Questions put to study subjects quoted; or Reference to easily obtainable article that contains such specification Recall periods specified Quality score: Number of ‘Yes’/Number of relevant items
  If new study subjects invited, response rates calculated based on number of invited participants at each survey    (Yes/No) (Yes/No) (Yes/No) (Yes/No) (Yes/No) (Yes/No) (Yes/No) (Yes/No)  
[8] 1088/2405 = 45 % 1088 470/1165 No Yes Yes Yes No Yes Yes Yes 9/11
  999/2405 = 41% 999 40%          82%
  878/2405 = 36% 878           
  827/2405 = 34% 827           
  758/2405 = 31% 758           
  700/2405 = 29% 700           
  614/2405 = 25% 614           
  599/2405 = 25% 599           
[9] 1309/2000 = 65% 1309 765/1309 Yes Yes Yes Yes Yes Yes Yes Yes 11/11
  1198/2000 = 60% 1198 58%          100%
  813/2000 = 41% 813           
[10] 1307/1963 = 67% 1307 269/1307 No Yes Yes Yes Yes Yes Yes Yes 10/11
  1159/2185 = 53% 1159 21%          91%
  1584/2744 = 58% 1584           
[11] 902/1057 = 85% 902 418/902 Yes No Yes Yes No No Yes Yes 8/11
  748/1057 = 71% 748 46%          73%
  654/1057 = 62% 654           
  546/1057 = 52% 546           
[12] 340/400 = 85% 340 206/340 Yes Yes Yes Yes Yes Yes Yes Yes 11/11
  participated   76%          100%
  Used in analysis: 305/340 = 90%   (95-100% responses)          
[13] ? 7791 3881/7791 Yes Yes Yes Yes No No Yes Yes 8/11
   6335 50%          73%
   5755           
   4885           
   4354           
[14] 6118/7769 = 79% 6118 4007/6118 Yes Yes Yes No Yes Yes Yes Yes 10/11
  4917/7769 = 63% 4917 65%          91%
  4520/7769 = 58% 4520           
[15] ?/308 ? 108/308 No Yes Yes Yes No Yes Yes Yes 7/11
  ?/308 ?           64%
  ?/308 ?           
  ?/308 ?           
  ?/308 ?           
  ?/308 ?           
  ?/308 ?           
  ?/308 ?           
  197/308 197           
  174/308 174