Table 1 Descriptive checklist
From: The natural course of low back pain: a systematic critical literature review
Reference number | Istauthor Year Country | Type of population (Age range) | Specific inclusion criteria in relation to LBP | Method of data collection | Definition of relevant LBP outcome variable (Anatomical site, recall periods, duration, severity, consequence) | Years or time of surveys | Numbers of surveys over the study period/years |
|---|---|---|---|---|---|---|---|
[8] | Smedley 1998 UK | University hospital-based nurses, all types (19–64 years) | NA | Qaire | LBP > 1 day in the past month | 1993 | 8/2 |
Every 3 month Until 1995 | |||||||
[9] | Hestbaek 2003 Denmark | Men and women living in a Danish municipality (30–50 years) | NA | Qaire | Number of days with LBP in the past year (0; 1–7; 8–30; >30) days | 1991 | 3/5 |
1992 | |||||||
1995 | |||||||
[10] | Maül 2003 Germany | University hospital-based nurses (?) | NA | Qaire | Number of days with LBP past year (0; 1–7; ≥8)* days | 1991 | 3/9 |
1992 | |||||||
1999 | |||||||
[11] | Kääriä 2006 Finland | The employees in factories, all types (at least 47 yrs) | NA | Qaire | LBP in the past year | 1973 | 4/28 |
1978 | |||||||
1983 | |||||||
2000 | |||||||
[12] | Tamcan 2010 Switzerland | General population (?) | Those who report LBP in 2002–03 and who still report LBP in 2005 | Internet-based diaries or postal diaries | LBP past month at week 1 and week 53 | 2005 | 53/1 |
Intensity of pain each week between | Every week | ||||||
[13] | Kolb 2011 Switzerland | General population (?) | NA | Computer assisted telephonic interviews | In past year >1 month of bad BP or LBP | 1999 | 5/5 |
2000 | |||||||
2001 | |||||||
2002 | |||||||
2003 | |||||||
[14] | Van Oostrom 2011 The Netherlands | General population (20–60) | NA | Qaire | Persistent LBP past year | 1993-97 | 3/10 |
Defined as more than three months (study 1 and 3) and more than one month (study 2) | 1998-02 | ||||||
2003-07 | |||||||
[15] | Videman 2005 Finlande | Nursing students | NA | Qaire | BP past 4 month, past year and past 4 years | Baseline | 9/7.5 |
(0; 1–7; 8–30; >30) daysbut not daily, and daily | Every 4 month during 2 years | ||||||
1 year after school | |||||||
5 year after school |