Table 3. Impact on effectiveness of 15 mg or 30 mg phentermine from 3 to 6 months.

Previous weight reduction phentermine 15 mg 0 – 3 months	Final weight reduction 3 – 6 months
	< 5%	≥ 5% – <10%	≥ 10%	Total effectiveness ≥ 5%
< 5% (n = 43)	22 (51.2%)	20 (46.5%)	1 (2.3%)	21 (48.8%)
≥ 5 – <10% (n = 52)	7 (13.5%)	22 (42.3%)	23 (44.2%)	45 (86.5%)
≥ 10% (n = 31)	–	–	31 (100%)	31 (100%)
Previous weight reduction phentermine 30 mg 0 – 3 months	Final weight reduction 3 – 6 months
	< 5%	≥ 5% – <10%	≥ 10%	Total effectiveness ≥ 5%
< 5% (n = 45)	28 (62.3%)	17 (37.7%)	–	17 (37.7%)
≥ 5 – < 10% (n = 83)	5 (6.1%)	47 (56.6%)	31 (37.3%)	78 (93.9%)
≥ 10% (n = 57)	–	12 (20.6%)	45 (79.4%)	57 (100%)

Data expressed as the number of patients (%).