Table 3

Frequency of prescription of complete therapeutic regimen or sub-therapeutic regimen of chloroquine over a twenty-year period at a private hospital in Ibadan, south-west Nigeria

Full course regimen

Sub-therapeutic regimen

YEAR

N

F

N

F

1983 (N = 289)

269

93.1%

20

6.9%

Pre-resistance phase

1985 (N = 298)

293

98.3%

5

1.7%

1987 (N = 295)

284

96.3%

11

3.7%

Phase of emerging resistance

1989 (N = 220)

214

97.3%

6

2.7%

1992 (N = 258)

202

78.3%

56

21.7%

1995 (N = 243)

177

72.8%

66

27.2%

Phase of resistance dissemination

1997 (N = 241)

136

56.4%

105

43.6%

N = No. of prescriptions evaluated

F = Frequency of prescription

Gbotosho et al. Malaria Journal 2009 8:313   doi:10.1186/1475-2875-8-313