Table 3.

Clusters of terms in slip and fall articles.

Title of Each Cluster	Selected Terms in Each Cluster (Occurrences of a Term)	Legend	Size of The Cluster
1# epidemiology and slip and fall incidence	Work (89), equipment (41), occupational injury (41), practice (38), health (36), experience (31), patient (30), report (30), STF(Slips, trips, and falls, 30), survey (30), effort (29), database (28), fracture (28), nature (28), review (28), sector (28), source (28), day (26), fatality (26).		192
2# gait or biomechanical	Trial (66), gait (57), response (55), velocity (54), stability (50), angle (48), foot (47), center (45), kinematic (45), speed (45), perturbation (44), older adult (41), walking (41), mass (37), recovery (36), motion (34), ground reaction force (32), support (32), RCOF (required coefficient of friction, 31).		165
3# friction measurement and coefficient	Friction (138), coefficient (81), experiment (49), parameter (45), slip resistance (41), COF (coefficient of friction, 38), length (34), friction coefficient (33), slipperiness (32), floor surface (30), surface condition (29), required coefficient (26), floor slipperiness (24), contaminant (22), friction measurement (21), correlation (20), water (19), interface (17), regression model (17).		100