Agricultural and Food Economics

Table 6 Frequency distribution of technical efficiency of rice farmers

From: Correcting for sample selection in stochastic frontier analysis: insights from rice farmers in Northern Ghana

Eff. Score	Conventional SPF						Sample selection SPF
	Pool		Irrigation		Rainfed		Pool		Irrigation		Rainfed
	Freq.	%	Freq.	%	Freq.	%	Freq.	%	Freq.	%	Freq.	%
10–20	0	0	0	0	0	0	10	1.9	1	0.4	2	0.6
21–30	0	0	0	0	0	0	15	2.8	7	3.1	8	2.5
31–40	118	21.9	0	0	0	0	35	6.5	20	9	13	4.1
41–50	53	9.9	0	0	127	40.3	68	12.6	22	9.9	32	10.2
51–60	80	14.9	57	25.6	45	14.3	74	13.8	27	12.1	60	19
61–70	105	19.5	30	13.5	36	11.4	128	23.8	26	11.7	70	22.2
71–80	73	13.6	64	28.7	43	13.7	132	24.5	40	17.9	105	33.3
81–90	99	18.4	42	18.8	56	17.8	71	13.2	53	23.8	25	7.9
91–100	10	1.9	30	13.5	8	2.5	5	0.9	27	12.1	0.0	0.0
Total	538	100	223	100	315	100	538	100	223	100	315	100
Min	33.7		59.4		40.6		13.3		18		18.4
Max	95.2		96.6		85.9		93.3		97.5		89.2
TE-Mean	60.6		74.4		60		62.2		68		63.4

Source: Field data, 2017

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