Table 1

Characteristics of included primary prevalence study reports (n=488) providing data for the period 1987–2017

VariablesN (%)*
Study type
 Peer-reviewed194 (40)
 Report or survey294 (60)
Region (Global Burden of Disease super regions)
 Central Europe, Eastern Europe and Central Asia75 (15)
 High Income300 (61)
 Latin America and Caribbean27 (6)
 North Africa and Middle East20 (4)
 South Asia9 (2)
 Southeast Asia, East Asia and Oceania25 (5)
 Sub-Saharan Africa32 (7)
Prevalence
 Any prevalence period484 (99)
 Unclear prevalence period4 (1)
 Point prevalence57 (12)
Incidence9 (2)
Age groups
 0–428 (6)
 5–933 (7)
 10–14214 (44)
 15–19385 (79)
 20–24256 (52)
 25–29264 (54)
 30–34270 (55)
 35–39273 (56)
 40–44281 (58)
 45–49287 (59)
 50–54297 (61)
 55–59294 (60)
 60–64286 (59)
 65–69276 (57)
 70–74268 (55)
 75–79257 (53)
 80–84245 (50)
 85–89243 (50)
 90–94241 (49)
 95+240 (49)
Data for both genders available472 (97)
Representative sample446 (91)
Acceptable low back pain definition79 (16)
  • *Numbers do not add up to the total number of reports (488) because some reports measured more than one prevalence period.